Câu hỏi:
18/06/2023 2,730
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 from 44 to 50.
A rather surprising 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 temperatures 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; the 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 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.
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 from 44 to 50.
A rather surprising 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 temperatures 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; the 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 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 word “it” in paragraph 2 refers to _______.
Đáp án chính xác
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Trả lời:
Giải bởi Vietjack
Đáp án B
Câu hỏi cùng đoạn
Câu 2:
All of the following are true about the 1970 survey of Antarctica EXCEPT that it ____.
Đáp án chính xác
Lời giải của GV VietJack
Đáp án D
Key words: 1970, Antarctica, EXCEPT __________.
Clue: aerial survey (= conducted by air), radio waves penetrated the ice (made use of radio waves), indeterminate size (could not determine the lake's exact size), It was not until much more recently that data collected by satellite
Nghiên cứu về Nam Cực năm 1970 là một nghiên cứu được thực hiện trên không, dùng sóng radio và chưa thể xác định được kích thước chính xác của hồ; phải đến gần đây thí nghiệm mới được điều khiển bằng vệ tinh.
Chú ý ở đây đề bài yêu cầu tìm câu sai do đó đáp án chính xác là đáp án D.
Câu 3:
It can be inferred from the passage that the ice would not be flat if __________.
It can be inferred from the passage that the ice would not be flat if __________.
Đáp án chính xác
Lời giải của GV VietJack
Đáp án A
Key words: ice, not flat
Clue: … an extremely flat region where the ice remains level because it is floating on the water of the lake
một khu vực cực kỳ phẳng nơi mà tảng băng luôn cân bằng vì nó nổi trên mặt hồ
Ta thấy tảng băng luôn cân bằng vì nó nổi trên mặt hồ do đó nếu không có hồ ở bên dưới thì tảng băng sẽ không thể cân bằng, do đó đáp án chính xác là đáp án A
Câu 4:
The word “microbes” in paragraph 3 could best be replaced by which of the following?
The word “microbes” in paragraph 3 could best be replaced by which of the following?
Đáp án chính xác
Lời giải của GV VietJack
Đáp án C
A. pieces of dust: mảnh bụi
B. tiny bubbles: bong bóng nhỏ bé
C. tiny organisms: sinh vật nhỏ bé
D. rays of light: tia sáng
=> microbles: vi khuẩn = tiny organisms
Câu 5:
Lake Vostok is potentially important to scientists because it __________.
Lake Vostok is potentially important to scientists because it __________.
Đáp án chính xác
Lời giải của GV VietJack
Đáp án B
Key words: Lake Vostok, important
Clue: … 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
mối quan tâm của cộng đồng khoa học vì có khả năng là hồ này chứa những vi khuẩn cổ đại đã sống hàng ngàn năm mà không bị ảnh hưởng bởi những yếu tố như bụi phóng xạ hạt nhân và ánh sáng tia cực tím cao
A. can be studied using radio waves: có thể nghiên cứu bằng sóng radio
B. may contain uncontaminated microbes: có thể chứa vi khuẩn chưa bị hư hỏng/ còn sống
C. may have elevated levels of ultraviolet light: có thể có mức độ ánh sáng tia cực tím cao
D. has already been contaminated: đã bị hư hỏng
Đáp án chính xác là B
Câu 6:
The last paragraph suggests that scientists should be aware of __________.
The last paragraph suggests that scientists should be aware of __________.
Đáp án chính xác
Lời giải của GV VietJack
Đáp án C
Key words: last paragraph, scientists, aware
Clue: conducting research … without actually exposing the lake to contamination
tiến hành nghiên cứu … mà không làm tổn hại đến hồ
A. further discoveries on the surface of Antarctica: khám phá nhiều hơn bề mặt của Nam Cực
B. problems with satellite-borne radar equipment: những vấn đề với thiết bị rada vệ tinh
C. ways to study Lake Vostok without contaminating it: phương pháp nghiên cứu hồ Vostok mà không làm tổn hại đến hồ
D. the harsh climate of Antarctica: khí hậu khắc nghiệt của Nam Cực
Đáp án chính xác là đáp án C
Câu 7:
The purpose of the passage is to __________.
The purpose of the passage is to __________.
Đáp án chính xác
Lời giải của GV VietJack
Đáp án D
A. explain how Lake Vostok was discovered: giải thích hồ Vostok được phát hiện như thế nào
B. provide satellite data concerning Antarctica: cung cấp dữ liệu vệ tinh liên quan đến Nam Cực
C. discuss future plans for Lake Vostok: bàn về kế hoạch tương lai cho hồ Vostok
D. present an unexpected aspect of Antarctica's geography: giới thiệu một khía cạnh bất ngờ của địa lý Nam Cực.
Nhà sách VIETJACK:
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