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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

 

Life in the Universe

    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem. 
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two. 
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

All of the following are mentioned in the passage as necessary for the development of life except ______.

A. rock

B. carbon

C. oxygen

D. water

1
24 tháng 10 2019

Đáp án C

Tất cả những điều sau đây được đề cập tới trong đoạn văn như là những điều cần thiết cho sự phát triển của sự sống, ngoại trừ ______.

A. đá.

B. khí các-bon.

C. khí ô-xi.

D. nước.

Dẫn chứng ở đoạn 2: “Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based (A), with liquid surface water (D) and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and and the Earth’climate depend. Since (as far as we know) all life is carbon-based (B), a stable carbon cycle is especially important” – (Hầu hết các nhà khoa học đồng ý rằng một hành tinh có sự sống phải có mặt đất, hoặc nền đá, cùng với bề mặt chất lỏng chảy trên đó và các chu trình địa hóa học sinh vật tương tự như sự vận động liên tục và sự trao đổi vật chất với môi trường. Chu trình đó bao gồm sự lưu thông của các nguyên tố và chất dinh dưỡng mà sự sống và khí hậu trên hành tinh đó phục thuộc vào. Bởi vì (như ta đã biết) thì mọi sự sống đều dựa trên các-bon, và một chu trình các-bon ổn định là đặc biệt quan trọng).

 Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...
Đọc tiếp

 

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

 

Life in the Universe

    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem. 
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two. 
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

 

 

 

 

Which is the topic of the passage?

A. The search for intelligent life

B. Conditions necessary for life.

C. Characteristics of extraterrestrial life

D. Life in our solar system

1
3 tháng 6 2017

Đáp án B

Đâu là chủ đề của đoạn văn?

A. Cuộc tìm kiếm cuộc sống thông minh.

B. Những điều kiện cần thiết cho sự sống.

C. Đặc điểm của cuộc sống ngoài Trái Đất.

D. Sự sống trong hệ mặt trời của chúng ta.

Giải thích: Đoạn văn nói về những điều kiện cần thiết để phát triển sự sống trên một hành tinh

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

 

Life in the Universe

    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem. 
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two. 
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

It can be inferred from the paragraph 3 that ______.

A. the Earth is in the sun’s habitable zone

B. the Earth is tidally locked to the sun.

C. the sun varies in its luminosity.

D. variations in luminosity help life to develop

1
2 tháng 7 2019

Đáp án A

Có thể được suy ra từ đoạn 3 rằng ______.

A. Trái đất nằm trong vùng có thể sinh sống của mặt trời.

B. Trái đất bị khóa chặt với mặt trời.

C. Mặt trời thay đổi theo độ sáng.

D. Sự biến đổi trong độ sáng giúp sự sống phát triển.

Được suy ra từ 2 câu đầu- đoạn 3: “The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years” – (Vùng có sự sống là khu vực xung quanh một ngôi sao nơi mà các hành tinh có thể phát triển sự sống. Đảm đương nhu cầu về chất lỏng chảy trên bề mặt, nó cho phép rằng hầu hết những ngôi sao có kích cỡ tương đương với mặt trời của chúng ta có thể duy trì vùng có sự sống qua hành tỉ năm) => Trái đất có sự sống là do nó nằm trong “habitable zones” của Mặt trời, mà “habitable zones” đó được Mặt trời duy trì qua hàng tỉ năm

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

 

Life in the Universe

    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem. 
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two. 
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

In can be inferred from paragraph 4 that______.

A. most stars have more than two planets in their habitable zone

B. no star has more than two planets in its habitable zone

C. it is not possible for a star to have three planets with life on them

D. for life to develop, a star must have at least two planets in its habitable zone

1
20 tháng 2 2018

Đáp án C

Có thể được suy ra từ đoạn 4 rằng______.

A. Đa số các ngôi sao có nhiều hơn hai hành tinh nằm trong vùng có sự sống của chúng.

B. Không có ngôi sao nào có nhiều hơn hai hành tinh nằm trong vùng có sự sống của nó.

C. Không thể có một ngôi sao có ba hành tinh có sự sống.

D. Để cho sự sống phát triển, một ngôi sao phải có ít nhất hai hành tinh nằm trong vùng có sự sống của nó.

Dẫn chứng ở câu cuối- đoạn 4: “This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two” – (Điều đó có nghĩa là để phát triển sự sống, con số lớn nhất có thể của các hành tinh có điều kiện hỗ trợ sự sống nằm trong vùng có sự sống của một ngôi sao bất kì luôn là 2) => Một ngôi sao có nhiều nhất 2 hành tinh có sự sống nằm trong “habitable zone” của nó.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

 

Life in the Universe

    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem. 
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two. 
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

The word “which” in paragraph 3 refers to ______.

1
11 tháng 1 2018

Đáp án C

Từ “which” ở đoạn 3 ám chỉ tới ______.

A. ngôi sao.

B. vùng.

C. khu vực

D. hành tinh.

Đọc cả câu: “The habitable zone is the region around a star in which planets can develop life” – (Vùng có sự sống là khu vực xung quanh một ngôi sao nơi mà những hành tinh có thể phát triển sự sống).

Như vậy “which” chỉ có thể là thay thế cho “region”.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like. What sorts of planets...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

Which of the following best expresses the essential information in the highlighted sentence in the passage?

A. Because of their nearness, habitable planets orbiting smaller stars usually have either constant daylight or constant night

B. The habitable zones of smaller stars are so close to the star that planets within them do not spin

C. One problem with some stars is that their habitable zones are tidally locked into either light or darkness

D. Some stars become tidally locked, so that they only shine light on one side of a planet

1
3 tháng 3 2019

Đáp án B

Câu nào dưới đây diễn đạt rõ ràng nhất những thông tin cần thiết trong câu được in đậm của đoạn văn?

A. Do ở gần nhau, các hành tinh có sự sống quay quanh các ngôi sao nhỏ hơn thường chỉ có liên tục là ban ngày hoặc ban đêm.

B. Vùng có sự sống của các ngôi sao nhỏ hơn rất gần với ngôi sao đó đến nỗi mà các hành tinh quanh chúng không quay.

C. Một vấn đề của một số ngôi sao là các vùng có sự sống của chúng bị khóa chặt trong ánh sáng hoặc bóng tối.

D. Một số ngôi sao bị khóa chặt, do đó chúng chỉ có thể chiếu sáng được một bên của một hành tinh.

Tạm dịch: “Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night” – (Những ngôi sao nhỏ hơn mặt trời thì lại gặp những vấn đề khác. Đầu tiên, những hành tinh nằm trong khu vực có sự sống của chúng sẽ rất gần với ngôi sao đó đến nỗi mà chúng sẽ bị “khóa chặt”- có nghĩa là một mặt của hành tinh sẽ luôn luôn đối mặt với ngôi sao trong ánh sánh vĩnh cửu, và mặt còn lại thì muôn đời chìm trong bóng tối).

=> Vùng có sự sống của các ngôi sao nhỏ hơn mặt trời sẽ rất gần với chính ngôi sao đó đến nỗi mà các hành tinh quanh chúng không thể quay (do bị khóa chặt).

Dịch bài

          “Exobiology” là một bộ môn nghiên cứu sự sống ngoài Trái Đất. Dù vậy thì đương nhiên rằng, vẫn chưa có một dạng sống nào được tìm thấy. Mặc dù vậy, những nhà khoa học thuộc bộ môn này đã tiến hành một công trình quan trọng về nghiên cứu giả thuyết của nơi sự sống có thế phát triển, và dạng sống ở đó sẽ như thế nào.

          Những kiểu hành tinh nào có thể phát triển được sự sống? Hầu hết các nhà khoa học đồng ý rằng một hành tinh có sự sống phải có mặt đất, hoặc nền đá, cùng với bề mặt chất lỏng chảy trên đó và các chu trình địa hóa học sinh vật tương tự như sự vận động liên tục và sự trao đổi vật chất với môi trường. Chu trình đó bao gồm sự lưu thông của các nguyên tố và chất dinh dưỡng mà sự sống và khí hậu trên hành tinh phục đó thuộc vào. Bởi vì (như ta đã biết) thì mọi sự sống đều dựa trên các-bon, và một chu trình các-bon ổn định là đặc biệt quan trọng.

          Vùng có sự sống là khu vực xung quanh một ngôi sao nơi mà các hành tinh có thể phát triển sự sống. Đảm đương nhu cầu về chất lỏng chảy trên bề mặt, nó cho phép rằng hầu hết những ngôi sao có kích cỡ tương đương với mặt trời của chúng ta có thể duy trì vùng có sự sống qua hành tỉ năm. Những ngôi sao có kích cơ lớn hơn mặt trời sẽ nóng hơn và đốt chát nhanh hơn, sự sống ở đó không thể có đủ thời gian mà tiến hóa. Những ngôi sao nhỏ hơn thì lại gặp những vấn đề khác. Đầu tiên, những hành tinh nằm trong khu vực có sự sống của chúng sẽ rất gần với ngôi sao đó đến nỗi mà chúng sẽ bị “khóa chặt”- có nghĩa là một mặt của hành tinh sẽ luôn luôn đối mặt với ngôi sao trong ánh sánh vĩnh cửu, và mặt còn lại thì muôn đời chìm trong bóng tối. Một rào cản khác đối với sự sống ở những ngôi nhỏ hơn mặt trời này đó là chúng có xu hướng thay đổi độ sáng, hoặc độ chói do các tia sáng và “điểm sao”. Sự biến đổi này có thể đủ lớn để có những ảnh hưởng có hại tới hệ sinh thái.

          Đương nhiên là không phải tất cả ngôi sao có kích cỡ phù hợp sẽ phát triển được sự sống, chúng cũng phải có những hành tinh có bề mặt cùng với quỹ đạo phù hợp. Hầu hết những hệ mặt trời đều có nhiều hơn 1 hành tinh, điều đó làm quỹ đạo của chúng tác động lẫn nhau bằng chính lực hấp dẫn của chúng. Do đó, để có được một hệ ổn định mà không hành tinh nào bị bay lạc ngoài không gian, thì phạm vi bề rộng của vùng có sự sống của một ngôi sao đóng vai trò rất quan trọng. Điều đó có nghĩa là để phát triển sự sống, số lượng lớn nhất có thể của các hành tinh có điều kiện hỗ trợ sự sống nằm trong vùng có sự sống của một ngôi sao bất kì luôn là 2.

          Cuối cùng, không phải tất cả những hành tinh đáp ứng được những điều kiện trên đều có thể phát triển sự sống. Một mối đe dọa chính là các tiểu hành tinh và sao chổi lớn, chúng có thể quét sạch sự sống mỗi khi cố gắng phát triển.

          Trường hợp của Trái Đất đã dạy ta rằng, có những lợi ích lớn thí dụ như sao Thổ và sao Mộc, ở rìa bên ngoài của hệ mặt trời, có thể giúp một hành tinh giữ được sự sống. Do có lực hút mạnh, chúng có xu hướng bắt hoặc làm lệch hướng các vật thể lớn trước khi nó thể tiếp cận Trái Đất

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

 

Life in the Universe

    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem. 
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two. 
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

In order for life to develop, a planet’s orbit must not be______.

A. stable

B. very close to another planet’s orbit

C. on the same planet as another planet’s orbit

D. less wide than the star’s habitable zone.

1
30 tháng 3 2017

Đáp án B

Để sự sống có thể phát triển, thì quỹ đạo của một hành tinh không được______.

A. có tính ổn định.

B. quá gần quỹ đạo của một hành tinh khác.

C. trên cùng một hành tinh như quỹ đạo của một hành tinh khác.

D. hẹp hơn phạm vi có sự sống của một ngôi sao.

Dẫn chứng ở 2 câu đầu- đoạn 4: “Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity” – (Đương nhiên là không phải tất cả ngôi sao có kích cỡ phù hợp sẽ phát triển được sự sống, chúng cũng phải có những hành tinh có bề mặt cùng với quỹ đạo phù hợp. Hầu hết những hệ mặt trời đều có nhiều hơn 1 hành tinh, điều đó làm quỹ đạo của chúng tác động lẫn nhau bằng chính lực hấp dẫn của chúng).

=> Để có sự sống thì quỹ đạo của một hành tinh không được quá gần với quỹ đạo của 1 hành tinh khác, không thì chúng sẽ tác động lẫn nhau bằng chính lực hấp dẫn của mình, khiến cho sự sống không thể phát triền

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.Life in the Universe   Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.   What sorts of planets...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

   Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.

   What sorts of planets are most likely to develop life? Most scientists agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble Earth’s. Water is an important solvent involved in many biological processes. Biogeochemical cycles are the continuous movement and transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’s climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

   The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and bum out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problem. First of all, planets in their habitable zones will be so close to the star that they will be “tidally locked” – that is one side of the planet will always face the star in perpetual daylight with the other side in the perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.

   Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the orbits must be a good distance from one another. Interestingly, the amount of space needed is roughly the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.

   Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas giants, such as Saturn and Jupiter,.in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth.

 

What is the topic of the passage?

A. The search for intelligent life 

B. Conditions necessary for life

C. Characteristics of extraterrestrial life

D. Life in our solar system

1
28 tháng 4 2019

Đáp án B

Kiến thức: Đọc hiểu

Giải thích:

Chủ đề của đoạn văn là gì?

A. Cuộc tìm kiếm cuộc sống thông minh

B. Điều kiện cần thiết cho sự sống.

C. Đặc điểm của sự sống ngoài Trái đất

D. Sự sống trong hệ mặt trời của chúng ta.

Thông tin: Exobiology is the study of life that originates from outside of Earth.

Tạm dịch: Sinh học ngoài Trái đất là một nghiên cứu về cuộc sống từ bên ngoài bề mặt Trái Đất

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.Life in the UniverseExobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.What sorts of planets are most...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble Earth’s. Water is an important solvent involved in many biological processes. Biogeochemical cycles are the continuous movement and transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’s climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and bum out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problem. First of all, planets in their habitable zones will be so close to the star that they will be “tidally locked” – that is one side of the planet will always face the star in perpetual daylight with the other side in the perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.

Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the orbits must be a good distance from one another. Interestingly, the amount of space needed is roughly the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.

Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas giants, such as Saturn and Jupiter,.in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth.
Question:
What is the topic of the passage?

A. The search for intelligent life

B. Conditions necessary for life

C. Characteristics of extraterrestrial life

D. Life in our solar system

1
31 tháng 1 2017

Đáp án B

Kiến thức: Đọc hiểu

Giải thích:

Chủ đề của đoạn văn là gì?

A. Cuộc tìm kiếm cuộc sống thông minh                 B. Điều kiện cần thiết cho sự sống.

C. Đặc điểm của sự sống ngoài Trái đất                   D. Sự sống trong hệ mặt trời của chúng ta.

Thông tin: Exobiology is the study of life that originates from outside of Earth.

Tạm dịch: Sinh học ngoài Trái đất là một nghiên cứu về cuộc sống từ bên ngoài bề mặt Trái Đất

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

 

Life in the Universe

    Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem. 
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two. 
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

The word “sustain” in paragraph 3 could best be replaced by ______.

A. assist

B. have

C. need

D. experience

1
24 tháng 10 2017

Đáp án B

Câu hỏi từ vựng.

Từ “sustain” ở đoạn 3 có thể được thay thế bởi ______.

A. assist (v): trợ giúp.

B. have (v): có.

C. need (v): cần.

D. experience (v): trải qua