K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

22 tháng 2 2019

Đáp án A

Harmful (adj): có hại

Dựa theo nghĩa câu chọn được đáp án phù hợp, khí ga độc thì đương nhiên có hại cho sức khoẻ.

Các đáp án còn lại:

B. good (adj): tốt

C. useful (adj): có lợi, có ích

D. careful (adj): cẩn thận

Dịch nghĩa: Một vài dạng khí ga độc rất có hại cho sức khoẻ con người

20 tháng 9 2018

Đáp án D
Stop + Ving: dừng làm việc gì đó

7 tháng 10 2017

Đáp án D

get rid it -> get rid of it

Get rid of : từ bỏ, thoát khỏi

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 29 In recent years there have been many articles on air pollution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is (25) ______ more and more contaminated, and that Man, through his carelessness, may run out of pure air to breathe. Automobiles and industries mainly...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 29

In recent years there have been many articles on air pollution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is (25) ______ more and more contaminated, and that Man, through his carelessness, may run out of pure air to breathe.

Automobiles and industries mainly account (26) _______ air pollution in most cities.  They pour into the air such gases as carbon monoxide, sulfur and nitrogen oxides, (27) _____ are very harmful to humans. (28) ____ still, these gases, a series of chemical changes, turn into toxic acids. They fall down in “acid rains”, raising the acidity in the air, soil and water to dangerous levels and affecting not only tress but also fish and other wildlife. Many industrial countries in Europe and North America have suffered bad effects (29) ______ those “rains”.

Surely, Man faces no more urgent problem than that of saving his own survival. Scientists, social organizations and governments shout sit down together to solve the air pollution problem.

A. with

B. from 

C. about

D. for

1
22 tháng 10 2017

Chọn B.

Đáp án B
Ta có: from : từ
Dịch: Many is industrial... from those “rains”: Nhiều nước công nghiệp ở châu Âu và Bắc Mỹ đã chịu ảnh hưởng xấu từ những “cơn mưa” này

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 28 In recent years there have been many articles on air pollution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is (25) ______ more and more contaminated, and that Man, through his carelessness, may run out of pure air to breathe. Automobiles and industries mainly...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 28

In recent years there have been many articles on air pollution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is (25) ______ more and more contaminated, and that Man, through his carelessness, may run out of pure air to breathe.

Automobiles and industries mainly account (26) _______ air pollution in most cities.  They pour into the air such gases as carbon monoxide, sulfur and nitrogen oxides, (27) _____ are very harmful to humans. (28) ____ still, these gases, a series of chemical changes, turn into toxic acids. They fall down in “acid rains”, raising the acidity in the air, soil and water to dangerous levels and affecting not only tress but also fish and other wildlife. Many industrial countries in Europe and North America have suffered bad effects (29) ______ those “rains”.

Surely, Man faces no more urgent problem than that of saving his own survival. Scientists, social organizations and governments shout sit down together to solve the air pollution problem.

A. Badly

B. Worst

C. Worse

D. Most

1
28 tháng 2 2019

Chọn C.

Đáp án C
Ta có: better / worse still: tốt hơn nữa / Tệ hơn nữa
Dịch: Worse still, ...turn in to toxic acids: Tệ hơn nữa, các khí này, với một loạt các thay đổi hóa học, biến thành axit độc hại.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 25 In recent years there have been many articles on air pollution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is (25) ______ more and more contaminated, and that Man, through his carelessness, may run out of pure air to breathe. Automobiles and industries mainly...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 25

In recent years there have been many articles on air pollution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is (25) ______ more and more contaminated, and that Man, through his carelessness, may run out of pure air to breathe.

Automobiles and industries mainly account (26) _______ air pollution in most cities.  They pour into the air such gases as carbon monoxide, sulfur and nitrogen oxides, (27) _____ are very harmful to humans. (28) ____ still, these gases, a series of chemical changes, turn into toxic acids. They fall down in “acid rains”, raising the acidity in the air, soil and water to dangerous levels and affecting not only tress but also fish and other wildlife. Many industrial countries in Europe and North America have suffered bad effects (29) ______ those “rains”.

Surely, Man faces no more urgent problem than that of saving his own survival. Scientists, social organizations and governments shout sit down together to solve the air pollution problem.

A. got 

B. become

C. becoming 

D. changing

1
1 tháng 9 2019

Chọn C.

Đáp án C
Ta có:
- become thường được dùng với dạng so sánh kép của tính từ 
+ Với tính từ ngắn: S + become adj-er and adj-er
+ Với tính từ dài: S + become + more and more + adj 
- Thì hiện tại tiếp diễn: S + is/am/are + V-ing + O

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 26 In recent years there have been many articles on air pollution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is (25) ______ more and more contaminated, and that Man, through his carelessness, may run out of pure air to breathe. Automobiles and industries mainly...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 26

In recent years there have been many articles on air pollution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is (25) ______ more and more contaminated, and that Man, through his carelessness, may run out of pure air to breathe.

Automobiles and industries mainly account (26) _______ air pollution in most cities.  They pour into the air such gases as carbon monoxide, sulfur and nitrogen oxides, (27) _____ are very harmful to humans. (28) ____ still, these gases, a series of chemical changes, turn into toxic acids. They fall down in “acid rains”, raising the acidity in the air, soil and water to dangerous levels and affecting not only tress but also fish and other wildlife. Many industrial countries in Europe and North America have suffered bad effects (29) ______ those “rains”.

Surely, Man faces no more urgent problem than that of saving his own survival. Scientists, social organizations and governments shout sit down together to solve the air pollution problem.

A. for

B. about 

C. of

D. with

1
2 tháng 8 2019

Chọn A.

Đáp án A
Ta có: account for sth: giải thích cho cái gì; là lời giải thích hay nguyên nhân của cái gì
Dịch: Automobiles and ... is most cities: ô tô và các ngành công nghiệp là nguyên nhân chính của sự ô nhiễm không khí ở hầu hết các thành phố.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 27 In recent years there have been many articles on air pollution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is (25) ______ more and more contaminated, and that Man, through his carelessness, may run out of pure air to breathe. Automobiles and industries mainly...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 27

In recent years there have been many articles on air pollution in newspapers and magazines. Scientists all over the world have warned that our atmosphere is (25) ______ more and more contaminated, and that Man, through his carelessness, may run out of pure air to breathe.

Automobiles and industries mainly account (26) _______ air pollution in most cities.  They pour into the air such gases as carbon monoxide, sulfur and nitrogen oxides, (27) _____ are very harmful to humans. (28) ____ still, these gases, a series of chemical changes, turn into toxic acids. They fall down in “acid rains”, raising the acidity in the air, soil and water to dangerous levels and affecting not only tress but also fish and other wildlife. Many industrial countries in Europe and North America have suffered bad effects (29) ______ those “rains”.

Surely, Man faces no more urgent problem than that of saving his own survival. Scientists, social organizations and governments shout sit down together to solve the air pollution problem.

A. that

B. which 

C. they

D. and

1
15 tháng 9 2018

Chọn B.

Đáp án B

Mệnh đề quan hệ không xác định:

- Mệnh đề quan hệ không xác định được dùng để bổ nghĩa cho 1 danh từ hoặc mệnh đề được đề cập đến ở trước trong câu. Nó bổ sung thêm thông tin thêm về người, về sự vật, một hiện tượng đang được nói đến. Mệnh đề quan hệ luôn đứng ngay sau danh từ, mệnh đề mà nó bổ nghĩa.

- Mệnh đề quan hệ không xác định không phải là thành phần cổt yếu của câu và có thể loại bỏ mà không ảnh hường gì đến câu.

- Khác với mệnh đề quan hệ xác định, mệnh đê quan hệ không xác định được phân cách bằng dấu phẩy và không thể bỏ đại từ quan hệ.

- Không dùng that trong mệnh đề quan hệ không xác định.

9 tháng 2 2018

Đáp án D

get rid it -> get rid of it
Get rid of : từ bỏ, thoát khỏi

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 following questions.         It is very important to have healthy teeth. Good teeth help us to chew our food. They also help us to look nice. How does a tooth go bad? The decay begins in a little crack in the enamel covering of the tooth. This happens after germs and bits of food have collected there then the decay slowly spreads inside the tooth. Eventually, poison...
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 following questions.

         It is very important to have healthy teeth. Good teeth help us to chew our food. They also help us to look nice. How does a tooth go bad? The decay begins in a little crack in the enamel covering of the tooth. This happens after germs and bits of food have collected there then the decay slowly spreads inside the tooth. Eventually, poison goes into the blood, and we may feel quite ill. How can we keep our teeth healthy? Firstly, we ought to visit our dentist twice a year. He can fill the small holes in our teeth before they destroy the teeth. He can examine our teeth to check that they are growing in the right way. Unfortunately, many people wait until they have toothache before they see a dentist. Secondly, we should brush our teeth with a toothbrush and fluoride toothpaste at least twice a day-once after breakfast and once before we go to bed. We can also use wooden toothpicks to clean between our teeth after a meal. Thirdly, we should eat food that is good for our teeth and our body: milk, cheese, fish, brown bread, potatoes, red rice, raw vegetables and fresh fruit. Chocolate, sweets, biscuits and cakes are bad, especially when we eat them between meals. They are harmful because they stick to our teeth and cause decay.

Sweets are harmful because they may make our teeth________

A. crack     

B. decay      

C. painful    

D. black

1
27 tháng 1 2019

Đáp án là B

Chocolate, sweets, biscuits and cakes are bad, especially when we eat them between meals. They are harmful because they stick to our teeth and cause decay.