Thứ sáu, 15/11/2024
IMG-LOGO

Câu hỏi:

17/07/2024 187

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.

     A rather surprising geographical feature of Antarctica is that a huge freshwater, one of the world's largest and deepest, lies hidden there under four kilometers of ice. Now known as Lake Vostok, this huge body of water is located under the ice block that comprises Antarctica. The lake is able to exist in its unfrozen state beneath this block of ice because its waters are warned by geothermal heat from the earth's core. This thick glacier above Lake Vostok actually insulates it from frigid temperatures (the lowest ever recorded on Earth) on the surface.

     The lake was first discovered in the 1970s while a research team was conducting an aerial survey of the area. Radio waves from the survey equipment penetrated the ice and revealed a body of water of indeterminate size. It was not until much more recently that data collected by satellite made scientists aware of the tremendous size of the lake; satellite-borne radar detected an extremely flat region where the ice remains level because it is floating on the water of the lake.

     The discovery of such a huge fresh water lake trapped under Antarctica is of interest to the scientific community because of the potential that the lake contains ancient microbes that have survived for thousands upon thousands of years, unaffected by factors such as nuclear fallout and elevated ultraviolet light that have affected organisms in more exposed areas. The downside of the discovery, however, lies in the difficulty of conducting research on the lake in such a harsh climate and in the problems associated with obtaining uncontaminated samples from the lake without actually exposing the lake to contamination. Scientists are looking for possible ways to accomplish this.

 

The purpose of the passage is to ________.

A. explain how Lake Vostok was discovered

B. provide satellite data concerning Antarctica

C. discuss future plans for Lake Vostok

D. present an unexpected aspect of Antarctica's geography

Đáp án chính xác

Trả lời:

verified Giải bởi Vietjack

Đáp án D

Dịch nghĩa: Mục đích của bài viế là để _________.

A. giải thích hồ Vostok được phát hiện như thế nào

B. cung cấp những dữ liệu vệ tinh về Nam Cực

C. bàn luận kế hoạch tương lai cho hồ Vostok

D. trình bày một phương diện không thể ngờ tới của địa lý Nam Cực.

Giải thích: Ngay câu mở đầu bài viết đã giới thiệu về một đặc điểm đáng ngạc nhiên của vùng Nam cực. Trong khi đó, phương án A chỉ được nhắc đến trong đoạn 2, phương án B không có, bài văn không đưa ra dữ liệu cụ thể nào cả, phương án C kế hoạch tương lai chỉ được gợi nhắc ở đoạn 3 mà không phải bàn luận, cũng quá chi tiết, không thể hiện được nội dung chính của cả bài như D.

Câu trả lời này có hữu ích không?

0

CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1:

The band is planning to go on _______ in Europe and Asia next year.

Xem đáp án » 19/06/2021 335

Câu 2:

Mark the letter A, B, C or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions

Xem đáp án » 19/06/2021 309

Câu 3:

Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

(A) The populace was (B) so terrified of the tornado that (C) however town she visited she found (D) villages deserted of inhabitants and livestock.

Xem đáp án » 19/06/2021 271

Câu 4:

Mark the letter A, B, C or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Xem đáp án » 19/06/2021 258

Câu 5:

Mark the letter A, B, C or D to indicate the sentence that is closest in meaning to each of the following questions.

Ironically, the new model is nowhere near as reliable as the old one.

Xem đáp án » 19/06/2021 249

Câu 6:

Whether it's English __________ mathematics, at Exeter we call our classes Harkness classes and our teachers Harkness teachers.

Xem đáp án » 19/06/2021 227

Câu 7:

Mark the letter A, B, C or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Xem đáp án » 19/06/2021 226

Câu 8:

Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

(A) One or the other of the secretaries (B) have to attend the meeting. But (C) both of them are reluctant (D) to do so.

Xem đáp án » 19/06/2021 222

Câu 9:

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.

     A rather surprising geographical feature of Antarctica is that a huge freshwater, one of the world's largest and deepest, lies hidden there under four kilometers of ice. Now known as Lake Vostok, this huge body of water is located under the ice block that comprises Antarctica. The lake is able to exist in its unfrozen state beneath this block of ice because its waters are warned by geothermal heat from the earth's core. This thick glacier above Lake Vostok actually insulates it from frigid temperatures (the lowest ever recorded on Earth) on the surface.

     The lake was first discovered in the 1970s while a research team was conducting an aerial survey of the area. Radio waves from the survey equipment penetrated the ice and revealed a body of water of indeterminate size. It was not until much more recently that data collected by satellite made scientists aware of the tremendous size of the lake; satellite-borne radar detected an extremely flat region where the ice remains level because it is floating on the water of the lake.

     The discovery of such a huge fresh water lake trapped under Antarctica is of interest to the scientific community because of the potential that the lake contains ancient microbes that have survived for thousands upon thousands of years, unaffected by factors such as nuclear fallout and elevated ultraviolet light that have affected organisms in more exposed areas. The downside of the discovery, however, lies in the difficulty of conducting research on the lake in such a harsh climate and in the problems associated with obtaining uncontaminated samples from the lake without actually exposing the lake to contamination. Scientists are looking for possible ways to accomplish this.

 

What is true of Lake Vostok?

Xem đáp án » 19/06/2021 221

Câu 10:

Mark the letter A, B, C or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions

Xem đáp án » 19/06/2021 220

Câu 11:

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.

     It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species' death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may change and a species may not be adapted. Food resources may be affected by environmental changes, which will then cause problems for a species requiring these resources. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.

     The fossil record reveals that extinction has occurred throughout the history of Earth. Recent analyses have also revealed that on some occasions many species became extinct at the same time - a mass extinction. One of the best-known examples of mass extinction occurred 65 million years ago with the demise of dinosaurs and many other forms of life. Perhaps the largest mass extinction was the one that occurred 225 million years ago, when approximately 95 percent of all species died. Mass extinctions can be caused by a relatively rapid change in the environment and can be worsened by the close interrelationship of many species. If, for example, something were to happen to destroy much of the plankton in the oceans, then the oxygen content of Earth would drop, even affect organisms not living in the oceans. Such a change would probably lead to a mass extinction.

     One interesting, and controversial, finding is that extinctions during the past 250 million years have tended to be more intense every 26 million years. The periodic extinction might be due to intersection of the earth's orbit with a cloud of comets, but this theory is purely speculative. Some researchers have also speculated that extinction may often be random. That is, certain species may be eliminated and others may survive for no particular reason. A species' survival may have nothing to do with its ability or inability to adapt. If so, some of revolutionary history may reflect a sequence of essentially random events.

 

What does the author say in paragraph 1 regarding most species in Earth's history?

Xem đáp án » 19/06/2021 216

Câu 12:

Mark the letter A, B, C or D to indicate the word/phrases SIMILAR in meaning to the underlined word(s) in each of the following questions.

Jim's decided to buy a phonograph even though they are now redundant.

Xem đáp án » 19/06/2021 212

Câu 13:

We need ________ actions and interventions of the local authorities to prevent national parks from being destroyed by pollution.

Xem đáp án » 19/06/2021 211

Câu 14:

Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

Early writing and Alphabets

     When people first began to write, they did not use an alphabet. Instead, they drew small pictures to (31) _______ the objects they were writing about. This was very slow because there was a different picture for every word.

     The Ancient Egyptians had a (32) _______of picture writing that was called hieroglyphics. The meaning of this writing was forgotten for a very long time but in 1799 some scientists (33) _______ a stone near Alexandria, in Egypt. The stone had been there for over a thousand years. It had both Greek and hieroglyphics on it and researchers were finally able to understand what the hieroglyphics meant.

     An alphabet is quite different from picture writing. It (34) _______of letters or symbols that represent a sound and each sound is just part of one word. The Phoenicians, who lived about 3,000 years ago, developed the modern alphabets. It was later improved by the Roman's and this alphabet is now used (35) _______ throughout the world.

Điền vào ô số 33

Xem đáp án » 19/06/2021 202

Câu 15:

Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

Early writing and Alphabets

     When people first began to write, they did not use an alphabet. Instead, they drew small pictures to (31) _______ the objects they were writing about. This was very slow because there was a different picture for every word.

     The Ancient Egyptians had a (32) _______of picture writing that was called hieroglyphics. The meaning of this writing was forgotten for a very long time but in 1799 some scientists (33) _______ a stone near Alexandria, in Egypt. The stone had been there for over a thousand years. It had both Greek and hieroglyphics on it and researchers were finally able to understand what the hieroglyphics meant.

     An alphabet is quite different from picture writing. It (34) _______of letters or symbols that represent a sound and each sound is just part of one word. The Phoenicians, who lived about 3,000 years ago, developed the modern alphabets. It was later improved by the Roman's and this alphabet is now used (35) _______ throughout the world.

Điền vào ô số 32

Xem đáp án » 19/06/2021 198

Câu hỏi mới nhất

Xem thêm »
Xem thêm »