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help me!!! Gap-filling The coelacanth The fish the coelacanth,(0)____was very common during the early history of the world,gets(1)____name from the Ancient Greek term for 'hollow spine'.At the begining (2)____the twentieth century,scientists believed (3)_____the coelacanth was extinct.Indeed,they had worked (4)_____from fossils off coelacanths that it (5)_____been extinct for over sixty million years. Then,in 1983,an extremely exciting scientific discovery was (6)_____.A fisherman fishing...
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help me!!!

Gap-filling

The coelacanth

The fish the coelacanth,(0)____was very common during the early history of the world,gets(1)____name from the Ancient Greek term for 'hollow spine'.At the begining (2)____the twentieth century,scientists believed (3)_____the coelacanth was extinct.Indeed,they had worked (4)_____from fossils off coelacanths that it (5)_____been extinct for over sixty million years.

Then,in 1983,an extremely exciting scientific discovery was (6)_____.A fisherman fishing off (7)_____coast of South Africa caught a very peculiar fish.Ha brought it back to the mainland (8)_____analysis, and it was identified from its hollow spine and the shape of its finds(9)_____a coelacanth.The fish was not extinct after (10)_____.

Unfortunately,the fish decomposes rapidly,preventing scientists (11)_____carrying out furrther studies on it.However,(12)_____1952 a number of coelacanths have (13)_____caught in the seas around east Africa,(14)_____scientists to examine the fish which everyone had presumed had died (15)_____with the dinosaurs.

1
26 tháng 11 2017

Gap-filling

The coelacanth

The fish the coelacanth,(0)__which__was very common during the early history of the world,gets(1)__its__name from the Ancient Greek term for 'hollow spine'.At the begining (2)__of__the twentieth century,scientists believed (3)__that___the coelacanth was extinct.Indeed,they had worked (4)___out__from fossils off coelacanths that it (5)__has___been extinct for over sixty million years.

Then,in 1983,an extremely exciting scientific discovery was (6)__made___.A fisherman fishing off (7)__the___coast of South Africa caught a very peculiar fish.Ha brought it back to the mainland (8)___for__analysis, and it was identified from its hollow spine and the shape of its finds(9)__as___a coelacanth.The fish was not extinct after (10)__....___.

Unfortunately,the fish decomposes rapidly,preventing scientists (11)__from___carrying out furrther studies on it.However,(12)__since___1952 a number of coelacanths have (13)__been___caught in the seas around east Africa,(14)__allowing___scientists to examine the fish which everyone had presumed had died (15)__out___with the dinosaurs.

26 tháng 11 2017

cảm ơn bạn

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 Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the...
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

Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the coelacanth, paleontologists have determined that the coelacanth was in existence around 350 million years ago, during the Paleozoic Era, more than 100 million years before the first dinosaurs arrived on the Earth. The most recent fossilized coelacanths date from around 70 million years ago, near the end of the age of dinosaurs. Because no fossilized remnants of coelacanth was believed to have died out around the same time as the dinosaurs.

The prehistoric coelacanth studied by paleontologists had distinctive characteristics that differentiated it from other fish. It was named for its hollow spine and was known to have been a powerful carnivore because of its many sharp teeth and a special joint in the skull that allowed the ferocious teeth to move in coordination with the lower jaw. It also had a pair of fins with unusual bony and muscular development that allowed the coelacanth to dart around the ocean floor. These fins also enable the coelacanth to search out prey trying to hide on the ocean bottom.

In 1938, a living specimen of the coelacanth was discovered in the catch of a fishing boat off the coast of South Africa, and since then numerous other examples of the coelacanth have been found in the waters of the Indian Ocean. This modern version of the coelacanth is not exactly the same as its prehistoric cousin. Today's coelacanth is larger than its prehistoric relative, measuring up to six feet in length and weighing up to 150 pounds. However, the modern version of the coelacanth still possesses the characteristic hollow spine and distinctive fins with their unusual bony and muscular structure.

It can be inferred from the passage that the word “coelacanth” comes from the Greek

A. sharp teeth

B. extinct fish

C. hollow spine

D. bony fingers

1
22 tháng 3 2019

C

Kiến thức: Đọc hiểu

Giải thích:

Có thể suy luận từ đoạn văn rằng từ "coelacanth" xuất phát từ tiếng Hy Lạp

A. răng sắc bén                                     B. cá đã tuyệt chủng

C. cột sống rỗng                                   D. ngón tay xương xẩu

Thông  tin:  The  prehistoric  coelacanth  studied  by  paleontologists  had  distinctive  characteristics  that differentiated it from other fish. It was named for its hollow spine

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 Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the...
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

Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the coelacanth, paleontologists have determined that the coelacanth was in existence around 350 million years ago, during the Paleozoic Era, more than 100 million years before the first dinosaurs arrived on the Earth. The most recent fossilized coelacanths date from around 70 million years ago, near the end of the age of dinosaurs. Because no fossilized remnants of coelacanth was believed to have died out around the same time as the dinosaurs.

The prehistoric coelacanth studied by paleontologists had distinctive characteristics that differentiated it from other fish. It was named for its hollow spine and was known to have been a powerful carnivore because of its many sharp teeth and a special joint in the skull that allowed the ferocious teeth to move in coordination with the lower jaw. It also had a pair of fins with unusual bony and muscular development that allowed the coelacanth to dart around the ocean floor. These fins also enable the coelacanth to search out prey trying to hide on the ocean bottom.

In 1938, a living specimen of the coelacanth was discovered in the catch of a fishing boat off the coast of South Africa, and since then numerous other examples of the coelacanth have been found in the waters of the Indian Ocean. This modern version of the coelacanth is not exactly the same as its prehistoric cousin. Today's coelacanth is larger than its prehistoric relative, measuring up to six feet in length and weighing up to 150 pounds. However, the modern version of the coelacanth still possesses the characteristic hollow spine and distinctive fins with their unusual bony and muscular structure.

This passage is about a fish

A. that is extinct

B. that once was extinct

C. that is becoming extinct

D. that is not extinct

1
4 tháng 12 2017

D

Kiến thức: Đọc hiểu

Giải thích:

Đoạn này nói về một con cá

A.  hiện đã tuyệt chủng                         B. đã từng bị tuyệt chủng

C. đang trở nên bị tuyệt chủng              D. không bị tuyệt chủng

Thông tin: Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct.  However,  an  unexpected  twentieth-  century  rediscovery  of  living  coelacanths  has  brought  about  a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth.

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 Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the...
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

Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the coelacanth, paleontologists have determined that the coelacanth was in existence around 350 million years ago, during the Paleozoic Era, more than 100 million years before the first dinosaurs arrived on the Earth. The most recent fossilized coelacanths date from around 70 million years ago, near the end of the age of dinosaurs. Because no fossilized remnants of coelacanth was believed to have died out around the same time as the dinosaurs.

The prehistoric coelacanth studied by paleontologists had distinctive characteristics that differentiated it from other fish. It was named for its hollow spine and was known to have been a powerful carnivore because of its many sharp teeth and a special joint in the skull that allowed the ferocious teeth to move in coordination with the lower jaw. It also had a pair of fins with unusual bony and muscular development that allowed the coelacanth to dart around the ocean floor. These fins also enable the coelacanth to search out prey trying to hide on the ocean bottom.

In 1938, a living specimen of the coelacanth was discovered in the catch of a fishing boat off the coast of South Africa, and since then numerous other examples of the coelacanth have been found in the waters of the Indian Ocean. This modern version of the coelacanth is not exactly the same as its prehistoric cousin. Today's coelacanth is larger than its prehistoric relative, measuring up to six feet in length and weighing up to 150 pounds. However, the modern version of the coelacanth still possesses the characteristic hollow spine and distinctive fins with their unusual bony and muscular structure.

What is stated in the passage about the prehistoric coelacanth?

A. It had few teeth.

B. It was a rather feeble fish.

C. It lived on plants.

D. It moved its teeth in an unusual way.

1
7 tháng 12 2018

D

Kiến thức: Đọc hiểu

Giải thích:

Điều gì được nêu trong đoạn văn về cá vây tay thời tiền sử?

A. Có ít răng.                        B. Là một loài cá khá yếu.

C. Nó sống trên cây.              D. Nó chuyển động răng của nó theo một cách khác thường.

Thông tin: It was named for its hollow spine and was known to have been a powerful carnivore because of its many sharp teeth and a special joint in the skull that allowed the ferocious teeth to move in coordination with the lower jaw.

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 Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the...
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

Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the coelacanth, paleontologists have determined that the coelacanth was in existence around 350 million years ago, during the Paleozoic Era, more than 100 million years before the first dinosaurs arrived on the Earth. The most recent fossilized coelacanths date from around 70 million years ago, near the end of the age of dinosaurs. Because no fossilized remnants of coelacanth was believed to have died out around the same time as the dinosaurs.

The prehistoric coelacanth studied by paleontologists had distinctive characteristics that differentiated it from other fish. It was named for its hollow spine and was known to have been a powerful carnivore because of its many sharp teeth and a special joint in the skull that allowed the ferocious teeth to move in coordination with the lower jaw. It also had a pair of fins with unusual bony and muscular development that allowed the coelacanth to dart around the ocean floor. These fins also enable the coelacanth to search out prey trying to hide on the ocean bottom.

In 1938, a living specimen of the coelacanth was discovered in the catch of a fishing boat off the coast of South Africa, and since then numerous other examples of the coelacanth have been found in the waters of the Indian Ocean. This modern version of the coelacanth is not exactly the same as its prehistoric cousin. Today's coelacanth is larger than its prehistoric relative, measuring up to six feet in length and weighing up to 150 pounds. However, the modern version of the coelacanth still possesses the characteristic hollow spine and distinctive fins with their unusual bony and muscular structure.

What is NOT true about the prehistoric coelacanth, according to the passage ?

A. It was smaller than the modern coelacanth.

B. It had a hollow pine and distinctive fins.

C. It weighed less than 150 pounds.

D. It measured as much as six feet in length.

1
29 tháng 7 2017

D

Kiến thức: Đọc hiểu

Giải thích:

Điều gì là không đúng sự thật về cá vây tay tiền sử, theo đoạn văn?

A. Nó nhỏ hơn so với cá vây tay hiện đại.   B. Nó có cột sống rỗng và vây khác thường.

C. Nó nặng chưa đầy 150 pound.         D. Nó dài khoảng 6 feet.

Thông tin: 

- Today's coelacanth is larger than its prehistoric relative, measuring up to six feet in length and weighing up to 150 pounds. 

- However, the modern version of the coelacanth still possesses the characteristic hollow spine and distinctive fins with their unusual bony and muscular structure.

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 Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the...
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

Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the coelacanth, paleontologists have determined that the coelacanth was in existence around 350 million years ago, during the Paleozoic Era, more than 100 million years before the first dinosaurs arrived on the Earth. The most recent fossilized coelacanths date from around 70 million years ago, near the end of the age of dinosaurs. Because no fossilized remnants of coelacanth was believed to have died out around the same time as the dinosaurs.

The prehistoric coelacanth studied by paleontologists had distinctive characteristics that differentiated it from other fish. It was named for its hollow spine and was known to have been a powerful carnivore because of its many sharp teeth and a special joint in the skull that allowed the ferocious teeth to move in coordination with the lower jaw. It also had a pair of fins with unusual bony and muscular development that allowed the coelacanth to dart around the ocean floor. These fins also enable the coelacanth to search out prey trying to hide on the ocean bottom.

In 1938, a living specimen of the coelacanth was discovered in the catch of a fishing boat off the coast of South Africa, and since then numerous other examples of the coelacanth have been found in the waters of the Indian Ocean. This modern version of the coelacanth is not exactly the same as its prehistoric cousin. Today's coelacanth is larger than its prehistoric relative, measuring up to six feet in length and weighing up to 150 pounds. However, the modern version of the coelacanth still possesses the characteristic hollow spine and distinctive fins with their unusual bony and muscular structure.

According to the passage, why are scientists sure that the prehistoric coelacanth was a flesh-eater?

A. Because of its hollow spine

B. Because of its unusual bony and muscular development

C. Because of the shape and movement of the teeth

D. Because of the size of the skull

1
20 tháng 12 2017

C

Kiến thức: Đọc hiểu

Giải thích:

Theo đoạn văn, tại sao các nhà khoa học chắc chắn rằng cá vây tay tiền sử là một loài ăn thịt?

A. Do cột sống rỗng của nó                        

B. Do sự phát triển xương và cơ bất thường của nó

C. Do hình dạng và chuyển động của răng

D. Do kích thước của hộp sọ

Thông tin: It was named for its hollow spine and was known to have been a powerful carnivore because of its many sharp teeth and a special joint in the skull that allowed the ferocious teeth to move in coordination with the lower jaw. 

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 Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the...
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

Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the coelacanth, paleontologists have determined that the coelacanth was in existence around 350 million years ago, during the Paleozoic Era, more than 100 million years before the first dinosaurs arrived on the Earth. The most recent fossilized coelacanths date from around 70 million years ago, near the end of the age of dinosaurs. Because no fossilized remnants of coelacanth was believed to have died out around the same time as the dinosaurs.

The prehistoric coelacanth studied by paleontologists had distinctive characteristics that differentiated it from other fish. It was named for its hollow spine and was known to have been a powerful carnivore because of its many sharp teeth and a special joint in the skull that allowed the ferocious teeth to move in coordination with the lower jaw. It also had a pair of fins with unusual bony and muscular development that allowed the coelacanth to dart around the ocean floor. These fins also enable the coelacanth to search out prey trying to hide on the ocean bottom.

In 1938, a living specimen of the coelacanth was discovered in the catch of a fishing boat off the coast of South Africa, and since then numerous other examples of the coelacanth have been found in the waters of the Indian Ocean. This modern version of the coelacanth is not exactly the same as its prehistoric cousin. Today's coelacanth is larger than its prehistoric relative, measuring up to six feet in length and weighing up to 150 pounds. However, the modern version of the coelacanth still possesses the characteristic hollow spine and distinctive fins with their unusual bony and muscular structure.

It can be inferred from the passage that the first dinosaurs most likely appeared on Earth around

A. 450 million years ago

B. 350 million years ago

C. 150 million years ago

D. 250 million years ago

1
30 tháng 11 2018

D

Kiến thức: Đọc hiểu

Giải thích:

Có thể suy luận từ đoạn văn rằng những con khủng long đầu tiên có thể xuất hiện trên trái đất khoảng

A. 450 triệu năm trước                         B. 350 triệu năm trước

C. 150 triệu năm trước                          D. 250 triệu năm trước

Thông tin: From fossil remains of the coelacanth, paleontologists have determined that the coelacanth was in existence around 350 million years ago, during the Paleozoic Era, more than 100 million years before the first dinosaurs arrived on the Earth.

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 Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the...
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

Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the coelacanth, paleontologists have determined that the coelacanth was in existence around 350 million years ago, during the Paleozoic Era, more than 100 million years before the first dinosaurs arrived on the Earth. The most recent fossilized coelacanths date from around 70 million years ago, near the end of the age of dinosaurs. Because no fossilized remnants of coelacanth was believed to have died out around the same time as the dinosaurs.

The prehistoric coelacanth studied by paleontologists had distinctive characteristics that differentiated it from other fish. It was named for its hollow spine and was known to have been a powerful carnivore because of its many sharp teeth and a special joint in the skull that allowed the ferocious teeth to move in coordination with the lower jaw. It also had a pair of fins with unusual bony and muscular development that allowed the coelacanth to dart around the ocean floor. These fins also enable the coelacanth to search out prey trying to hide on the ocean bottom.

 

In 1938, a living specimen of the coelacanth was discovered in the catch of a fishing boat off the coast of South Africa, and since then numerous other examples of the coelacanth have been found in the waters of the Indian Ocean. This modern version of the coelacanth is not exactly the same as its prehistoric cousin. Today's coelacanth is larger than its prehistoric relative, measuring up to six feet in length and weighing up to 150 pounds. However, the modern version of the coelacanth still possesses the characteristic hollow spine and distinctive fins with their unusual bony and muscular structure.

The topic of the preceding paragraph is most likely

A. the discovery of the coelacanth

B. a reassessment of the status of a number of kinds of fish

C. a particular prehistoric sea creature

D. various extinct fish

1
13 tháng 4 2018

D

Kiến thức: Đọc hiểu

Giải thích:

Chủ đề của đoạn trước rất có thể là

A. sự khám phá cá vây tay                    B. đánh giá lại tình trạng của một số loại cá

C. một sinh vật biển thời tiền sử đặc biệt     D. các loài cá tuyệt chủng khác nhau

Bởi ở đầu bài viết này có nhắc đến “these fish, which are actually extinct” nên đoạn trước có thể nói về các loài cá đã tuyệt chủng

 

Dịch bài đọc:

Không  giống như  những  loài  cá  này  thực  sự  đã tuyệt  chủng,  cá  vây  tay  là  một  loại cá được cho là đã tuyệt chủng. Tuy nhiên, một khám phá lạ lùng trong thế kỷ hai mươi về cá vây tay sống đã mang đến một đánh giá về trạng thái của sinh vật biển tiền sử được cho là từ lâu đã biến mất khỏi Trái Đất.

Từ các hóa thạch còn lại của cá vây tay, các nhà cổ sinh vật học đã xác định rằng cá vây tay đã tồn tại khoảng 350  triệu năm trước,  trong  kỷ  nguyên Paleozoi, hơn 100 triệu năm trước  khi  những  con  khủng long đầu  tiên xuất hiện trên trái đất. Các loài cá vây tay hoá thạch gần đây nhất được cho là từ khoảng 70 triệu năm trước, gần cuối thời kỳ khủng long. Bởi vì không có hóa thạch còn sót lại của cá vây tay được cho là đã chết trong khoảng thời gian giống như khủng long.

Cá vây tay tiền sử được các nhà cổ sinh vật học nghiên cứu có đặc điểm phân biệt với các loài cá khác. Nó được đặt tên bởi cột sống rỗng của nó và được biết đến là một động vật ăn thịt mạnh bởi nhiều răng sắc và một khớp đặc biệt trong hộp sọ cho phép răng khoẻ mạnh chuyển động cùng với hàm dưới. Nó cũng có một đôi vây với sự phát triển xương và cơ bắp bất thường cho phép cá vây tay lặn xuống đáy đại dương. Những vây này cũng cho phép cá vây tay tìm ra con mồi cố gắng trốn trên đáy đại dương.

Năm 1938, một mẫu vật sống của cá vây tay đã được tìm thấy trong một chiếc thuyền đánh bắt ngoài khơi Nam Phi, và kể từ đó nhiều ví dụ khác của cá vây tay đã được tìm thấy ở vùng biển Ấn Độ Dương. Phiên bản hiện đại của cá  vây tay không hoàn toàn giống với thời tiền sử của nó. Cá vây tay ngày nay lớn hơn so với tiền sử của nó, có chiều dài lên đến 6 feet và nặng đến 150 pound. Tuy nhiên, phiên bản hiện đại của cá vây tay vẫn có cột sống rỗng đặc trưng và các vây đặc biệt với cấu trúc xương và cơ bất thường của chúng.

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 Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the...
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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

Unlike these fish, which are actually extinct, the coelacanth is a type of fish that was believed to be extinct. However, an unexpected twentieth- century rediscovery of living coelacanths has brought about a reassessment of the status of the prehistoric sea creature that was believed to have long since disappeared from the Earth. From fossil remains of the coelacanth, paleontologists have determined that the coelacanth was in existence around 350 million years ago, during the Paleozoic Era, more than 100 million years before the first dinosaurs arrived on the Earth. The most recent fossilized coelacanths date from around 70 million years ago, near the end of the age of dinosaurs. Because no fossilized remnants of coelacanth was believed to have died out around the same time as the dinosaurs.

The prehistoric coelacanth studied by paleontologists had distinctive characteristics that differentiated it from other fish. It was named for its hollow spine and was known to have been a powerful carnivore because of its many sharp teeth and a special joint in the skull that allowed the ferocious teeth to move in coordination with the lower jaw. It also had a pair of fins with unusual bony and muscular development that allowed the coelacanth to dart around the ocean floor. These fins also enable the coelacanth to search out prey trying to hide on the ocean bottom.

 

In 1938, a living specimen of the coelacanth was discovered in the catch of a fishing boat off the coast of South Africa, and since then numerous other examples of the coelacanth have been found in the waters of the Indian Ocean. This modern version of the coelacanth is not exactly the same as its prehistoric cousin. Today's coelacanth is larger than its prehistoric relative, measuring up to six feet in length and weighing up to 150 pounds. However, the modern version of the coelacanth still possesses the characteristic hollow spine and distinctive fins with their unusual bony and muscular structure.

The pronoun “It” in the third paragraph refers to

A. coordination

B. coelacanth

C. joint

D. jaw

1
18 tháng 9 2017

B

Kiến thức: Đọc hiểu

Giải thích:

Đại từ "Nó" ở đoạn thứ ba đề cập đến

A. phối hợp                                          B. cá vây tay

C. khớp                                                D. hàm

“It” đề cập đến cá vây tay: The prehistoric coelacanth studied by paleontologists had distinctive characteristics that differentiated it from other fish. […] It also had a pair of fins with unusual bony and muscular development that allowed the coelacanth to dart around the ocean floor.

Cá vây tay tiền sử được các nhà cổ sinh vật học nghiên cứu có đặc điểm phân biệt với các loài cá khác. […] Nó cũng có một đôi vây  với  sự  phát  triển xương và cơ bắp  bất thường  cho  phép  cá  vây  tay  lặn  xuống đáy đại dương.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 19 to 28The term civilization basically means the ___19___ of development at which people live together peacefully in communities. Ancient civilization refers specifically to the first ___20___ and stable communities that became the basis for later states, nations, and empires.The study of ancient civilization is concerned with...
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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 word or phrase that best fits each of the numbered blanks from 19 to 28

The term civilization basically means the ___19___ of development at which people live together peacefully in communities. Ancient civilization refers specifically to the first ___20___ and stable communities that became the basis for later states, nations, and empires.

The study of ancient civilization is concerned with the earliest ___21___ of the much broader subject called ancient history. The ___22___ of ancient history began with the invention of writing in about 3100 BC and lasted for more than 35 centuries. Mankind existed long before the written word, but writing made the keeping of a historical record ___23___.

The first ancient societies ___24___ in Mesopotamia and Egypt in the Middle East, in the Indus Valley region of ___25___ are now Pakistan and India, in the Huang He (Yellow River) valley of China, on the island of Crete in the Aegean Sea, and in Central America. All of these civilizations had certain ___26___ in common. They built cities, invented forms of writing, learned to make pottery and use metals, domesticated animals, and created fairly complex social structures with class systems.

___27___ written records and carved inscriptions, the knowledge about ancient peoples is derived from the work of archaeologists. Most of the significant archaeological ___28___ have been made in the past 200 years. The Sumerian culture of Mesopotamia was discovered in the 1890s, and some of the most important archaeological digs in China were made after the late 1970s.

Điền vào ô 23

A. able 

B. possible 

C. potential 

D. capable

1
9 tháng 4 2019

Đáp án B.

“possible”: có khả năng, có thể thực hiện

“writing made the keeping of a historical record possible”: chữ viết giúp sự lưu trữ dấu ấn lịch sử có khả năng thực hiện được