A rather surprisingly geographical feature of Antarctica is
Câu hỏi
Nhận biếtRead 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 38 to 45.A rather surprisingly geographical feature of Antarctica is that a huge freshwater lake, 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 warmed by geothermal heat from the earth's core. The thick glacier above Lake Vostok actually insulates it from the frigid temperature (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 scientist 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 freshwater lake trapped under Antarctic is of interest to the scientific community because of 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.
Câu 1: The passage mentions which of the following as a reason for the importance of Lake Vostok?
A. It may contain uncontaminated microbes
B. It can be studied using radio waves
C. It has already been contaminated.
D. It may have elevated levels of ultraviolet light.
Câu 2: All of the following are true about the 1970 survey of Antarctica EXCEPT that it______
A. was conducted by air
B. made use of radio waves
C. did not measure the exact size of the lake
D. was controlled by a satellite
Câu 3: The paragraph following the passage most probably discusses
A. Problems with satellite- borne radar equipment
B. the harsh climate of Antarctica.
C. further discoveries on the surface of Antarctica
D. ways to study Lake Vostok without contaminating it
Câu 4: The word "microbes" in paragraph 3 could be best be replaced by which of the following?
A. Pieces of dust
B. Tiny organisms
C. Rays of light
D. Trapped bubbles
Câu 5: Which of the following is closet in meaning to "frigid" in paragraph 1?
A. Rarely recorded
B. Extremely cold
C. Never changing
D. Quite harsh
Câu 6: The purpose of the passage is to ______
A. explain how Lake Vostok was discovered
B. provide satellite data concerning Antarctica
C. present an expected aspect of Antarctica's geography.
D. discuss future plans for Lake Vostok
Câu 7: It can be inferred from the passage that the ice would not be flat if ______
A. radio waves were not used
B. Antarctica were not so cold
C. There were no lake
D. the lake was not so big
Câu 8: What is true of Lake Vostok?
A. It is beneath a thick slab of ice
B. It is completely frozen
C. It is heated by the sun
D. It is not a saltwater lake
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Đáp án đúng:
Lời giải của Tự Học 365
Đáp án câu 1 là: AGiải chi tiết:
Tạm dịch: Đoạn văn đề cập đến điều sau đây là một lý do cho tầm quan trọng của Hồ Vostok?
A. Nó có thể chứa vi khuẩn không nhiễm bẩn
B. Nó có thể được nghiên cứu bằng cách sử dụng sóng vô tuyến điện
C. Nó đã bị ô nhiễm.
D. Nó có thể chứa tia cực tím mức độ cao.
Đáp án: A
Thông tin: The discovery of such a huge freshwater lake trapped under Antarctic is of interest to the scientific community because of potential that the lake contains ancient microbes that have survived for thousands upon thousands of years
Đáp án câu 2 là: DGiải chi tiết:
Tạm dịch: Tất cả những điều dưới đây là đúng về khảo sát năm 1970 về Nam Cực ngoại trừ ______
A. được thực hiện bằng đường hàng không
B. sử dụng sóng vô tuyến điện
C. không đo kích thước chính xác của hồ
D. được điều khiển bởi vệ tinh
Thông tin: 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.
Đáp án: D
Đáp án câu 3 là: B
Giải chi tiết:
Tạm dịch: Đoạn văn tiếp sau đoạn văn ở đề bài có khả năng nhất sẽ thảo luận về
A. Các vấn đề với thiết bị radar vệ tinh
B. Khí hậu khắc nghiệt của Nam Cực.
C. Các khám phá thêm trên bề mặt của Nam Cực
D. Cách để nghiên cứu Hồ Vostok mà không gây ô nhiễm nó
Thông tin: 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.
Đáp án: B
Đáp án câu 4 là: BGiải chi tiết:
Giải thích: Microbes: vi khuẩn
A. Pieces of dust: hạt bụi
B. Tiny organisms: Sinh vật nhỏ
C. Rays of light: Tia sáng
D. Trapped bubbles: Những bong bóng bị mắc kẹt
Đáp án: B
Đáp án câu 5 là: BGiải chi tiết:
Giải thích: frigid (adj): lạnh lẽo
A. Rarely recorded: Hiếm khi được ghi lại
B. Extremely cold: Cực kỳ lạnh
C. Never changing: Không bao giờ thay đổi
D. Quite harsh: Khá khắc nghiệt
Đáp án: B
Đáp án câu 6 là: CGiải chi tiết:
Tạm dịch: Mục đích của đoạn văn là _____
A. giải thích việc Hồ Vostok được khám phá
B. cung cấp dữ liệu vệ tinh liên quan đến Nam Cực
C. trình bày một khía cạnh được kỳ vọng về địa lý của Nam Cực.
D. thảo luận kế hoạch tương lai cho Hồ Vostok
Thông tin: The discovery of such a huge freshwater lake trapped under Antarctic is of interest to the scientific community because of potential
Đáp án: C
Đáp án câu 7 là: CGiải chi tiết:
Tạm dịch: Có thể suy luận từ đoạn văn rằng băng sẽ không phẳng nếu ______
A. sóng vô tuyến không được sử dụng
B. Cực Nam cực không lạnh
C. Không có hồ
D. Hồ không lớn
Thông tin: satellite -borne radar detected an extremely flat region where the ice remains level because it is floating on the water of the lake.
Đáp án: C
Đáp án câu 8 là: AGiải chi tiết:
Tạm dịch: Điều gì là đúng về Hồ Vostok?
A. Nó nằm dưới một tảng băng dày
B. Nó hoàn toàn bị đóng băng
C. Nó được làm nóng bởi mặt trời.
D. Đó không phải là một hồ nước mặn.
Đáp án: A
Thông tin: Now known as Lake Vostok, this huge body of water is located under the ice block that comprises Antarctica.
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