IMG-LOGO

Câu hỏi:

19/07/2024 265

Read the following pasage 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 paragraph following the passage most probably discusses _________.

A. further discoveries on the surface of Antarctica

B. problems with satellite-borne radar equipment

C. ways to study Lake Vostok without contaminating it

Đáp án chính xác

D. the harsh climate of Antarctica

Trả lời:

verified Giải bởi Vietjack

Đáp án C

Dịch nghĩa: Đoạn văn phía sau có khả năng cao sẽ bàn luận về ___________.

A. những phát hiện khác trên bề mặt Nam cực

B. vấn đề với các thiết bị truyền radar qua vệ tinh

C. các cách để nghiên cứu hồ Vostok mà không làm hư hại đến nó

D. thời tiết khắc nghiệt ở Nam Cực

Giải thích: Ở đoạn 3 đã nói về việc các nhà khoa học đang tìm cách để nghiên cứu mà không gây tổn hại cho hồ, như vậy đoạn 4 có khả năng tiếp tục bản về vấn đề này. Nếu bàn về A, B, D thì không sai nhưng không tạo được mạch liên kết giữa các đoạn và còn hơi lệch vấn đề: đặc điểm địa lý khác lạ ở Nam Cực.

Bài dịch

Một đặc điểm địa lý đáng ngạc nhiên của Nam Cực đó là một vùng nước ngọt khổng lồ, một trong những vùng lớn nhất và sâu nhất trái đất, nằm ẩn dưới bốn km băng. Bây giờ được gọi là hồ Vostok, lượng nước khổng lồ này nằm dưới khối băng tạo nên Nam Cực. Hồ có thể tồn tại ở trạng thái lỏng dưới khối băng là do nước được làm ấm bởi địa nhiệt từ lõi trái đất. Sông băng dày trên hồ Vostok bảo vệ nó khỏi nhiệt độ băng giá trên bề mặt (thấp nhất từng được ghi lại trên Trái đất).

Hồ lần đầu tiên được phát hiện vào những năm 1970 khi một nhóm nghiên cứu đã tiến hành một cuộc khảo sát trên không của khu vực. Sóng vô tuyến từ các thiết bị khảo sát thâm nhập vào băng và phát hiện một vùng nước có kích thước bất định. Đến gần đây các dữ liệu thu thập bởi vệ tinh mới cho các nhà khoa học biết được được kích thước to lớn của hồ; vệ tinh truyền qua radar phát hiện một khu vực cực kỳ bằng phẳng, nơi các băng đá đang còn nguyên vì nó trôi nổi trên mặt nước của hồ.

Việc phát hiện ra một hồ nước ngọt lớn ở dưới Nam Cực là điều mà cộng đồng khoa học rất quan tâm vì có khả năng hồ còn chứa vi sinh vật cổ đại sống sót trong hàng ngàn hàng ngàn năm, không bị ảnh hưởng bởi các yếu tố như bụi phóng xạ hạt nhân và ánh sáng tia cực tím cao đã ảnh hưởng đến những vùng có ánh mặt trời bức xạ rộng. Mặt tiêu cực của các phát hiện này nằm ở việc khó khăn khi phải tiến hành nghiên cứu trên hồ trong điều kiện khí hậu khắc nghiệt và các vấn đề liên quan đến việc thu thập các mẫu không bị ô nhiễm lấy từ hồ mà không thực sự gây hư hại gì đến hồ. Các nhà khoa học đang tìm cách để có thể thực hiện điều này.

Câu trả lời này có hữu ích không?

0

CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1:

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 35.

Xem đáp án » 19/06/2021 1,836

Câu 2:

Mark the letter A, B, C or D to indicate the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following questions.

There have been significant changes in women's lives since the women's liberation movement.

Xem đáp án » 19/06/2021 1,782

Câu 3:

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 1,766

Câu 4:

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

Xem đáp án » 19/06/2021 1,581

Câu 5:

Mark the letter A, B, C or D to indicate the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following questions.

In 1989, a ban was given on all international trade in ivory.

Xem đáp án » 19/06/2021 1,005

Câu 6:

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.

According to paragraph 2, evidence from fossils suggests that

Xem đáp án » 19/06/2021 677

Câu 7:

Mark the letter A, B, C or D to indicate the sentence that best combines each pair of sentences in the following questions.

She tried very hard to pass the driving test. She could hardly pass it.

Xem đáp án » 19/06/2021 609

Câu 8:

Mark the letter A, B, C or D to indicate the sentence that best combines each pair of sentences in the following questions.

The Prime Minister set up a committee of financial experts. They ere to help him discuss and formulate new policies.

Xem đáp án » 19/06/2021 500

Câu 9:

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 483

Câu 10:

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 31.

Xem đáp án » 19/06/2021 444

Câu 11:

He will be very upset if you _______ his offer of help.

Xem đáp án » 19/06/2021 424

Câu 12:

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 34.

Xem đáp án » 19/06/2021 371

Câu 13:

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 363

Câu 14:

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 360

Câu 15:

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 352