Câu hỏi:
05/07/2023 404
Read the following passage and then answer the questions.
According to the best evidence gathered by space probes and astronomers, Mars is an inhospitable planet, more similar to Earth’s Moon than to Earth itself – a dry, stark, seemingly lifeless world. Mars’ air pressure is equal to Earth’s at an altitude pf 100.000 feet. The air there is 95 percent carbon dioxide.
Mars has no ozone layer to screen out the sun’s lethal radiation. Daytime temperatures may reach above freezing, but because the planet is blanketed by the mere wisp of an atmosphere, the heat radiates back into space. Even at the equator, the temperature drops to -50C (-60F) at night. Today there is no liquid water, although valleys and channels on the surface show evidence of having been carved by running water. The polar ice caps are made of frozen water and carbon dioxide, and water may be frozen in the ground as permafrost.
Despite these difficult conditions, certain scientists believe that there is a possibility of trans-forming Mars into a more Earth-like planet. Nuclear reactors might be used to melt frozen gases and eventually build up the atmosphere. This in turn could create a “greenhouse effect” that would stop heat from radiating back into space. Liquid water could be thawed to form a polar ocean. Once enough ice has melted, suitable plants could be introduced to build up the level of oxygen in the atmosphere so that, in time, the planet would support animal life from Earth and even permanent human colonies. “This was once thought to be so far in the future as to be irrelevant,” said Christopher McKay, a research scientist at NASA. “But now it’s starting to look practical. We could begin work in four or five decades.”
The idea of “terra-forming” Mars, as enthusiasts call it, has its roots in science fiction. But as researchers develop a more profound understanding of how Earth’s ecology supports life, they have begun to see how it may be possible to create similar conditions on Mars. Don’t plan on homesteading on Mars nay time soon, though. The process could take hundreds or even thousands of years to complete and the cost would be staggering.
What does the passage mainly discuss?
Read the following passage and then answer the questions.
According to the best evidence gathered by space probes and astronomers, Mars is an inhospitable planet, more similar to Earth’s Moon than to Earth itself – a dry, stark, seemingly lifeless world. Mars’ air pressure is equal to Earth’s at an altitude pf 100.000 feet. The air there is 95 percent carbon dioxide.
Mars has no ozone layer to screen out the sun’s lethal radiation. Daytime temperatures may reach above freezing, but because the planet is blanketed by the mere wisp of an atmosphere, the heat radiates back into space. Even at the equator, the temperature drops to -50C (-60F) at night. Today there is no liquid water, although valleys and channels on the surface show evidence of having been carved by running water. The polar ice caps are made of frozen water and carbon dioxide, and water may be frozen in the ground as permafrost.
Despite these difficult conditions, certain scientists believe that there is a possibility of trans-forming Mars into a more Earth-like planet. Nuclear reactors might be used to melt frozen gases and eventually build up the atmosphere. This in turn could create a “greenhouse effect” that would stop heat from radiating back into space. Liquid water could be thawed to form a polar ocean. Once enough ice has melted, suitable plants could be introduced to build up the level of oxygen in the atmosphere so that, in time, the planet would support animal life from Earth and even permanent human colonies. “This was once thought to be so far in the future as to be irrelevant,” said Christopher McKay, a research scientist at NASA. “But now it’s starting to look practical. We could begin work in four or five decades.”
The idea of “terra-forming” Mars, as enthusiasts call it, has its roots in science fiction. But as researchers develop a more profound understanding of how Earth’s ecology supports life, they have begun to see how it may be possible to create similar conditions on Mars. Don’t plan on homesteading on Mars nay time soon, though. The process could take hundreds or even thousands of years to complete and the cost would be staggering.
What does the passage mainly discuss?
Đáp án chính xác
Câu hỏi trong đề:
Đề thi giữa học kì 2 môn Tiếng Anh lớp 12 có đáp án !!
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
Quảng cáo
Trả lời:
Giải bởi Vietjack
Chọn đáp án A.
Giải thích: Ta có thể dựa vào bài đọc, đặc biệt là câu “scientists believe that there is a possibility of transforming Mars into a more Earth-like planet” - các nhà khoa học tin rằng có khả năng biến sao Hỏa thành một hành tinh giống Trái đất.
Dịch: Khả năng biến đổi môi trường Sao Hỏa.
Câu hỏi cùng đoạn
Câu 2:
The word "there" in paragraph 1 refers to
The word "there" in paragraph 1 refers to
Đáp án chính xác
Lời giải của GV VietJack
Chọn đáp án C.
Giải thích: Dựa vào câu “Mars' air pressure is equal to Earth's at an altitude of 100,000 feet. The air there is 95 percent carbon dioxide.”. Từ “there” thế chỗ cho chủ ngữ của câu trước nhằm tránh lặp chủ ngữ.
Dịch: Áp suất không khí của sao Hỏa bằng với áp suất của Trái đất ở độ cao 100.000 feet. 95 phần trăm không khí ở đó là carbon dioxide.
Câu 3:
The "greenhouse effect" mentioned in paragraph 3 is
The "greenhouse effect" mentioned in paragraph 3 is
Đáp án chính xác
Lời giải của GV VietJack
Chọn đáp án D.
Giải thích: Dựa vào câu “Nuclear reactors might be used to melt frozen gases and eventually build up the atmosphere. This in turn could create a "greenhouse effect" that would stop heat from radiating back into space.” diễn tả việc phản ứng hạt nhân có thể sử dụng để làm tan chảy khí gas và tạo nên một bầu khí quyển mới, khá tương đồng với hiệu ứng nhà kính.
Dịch: Một phương án khả thi để làm sao hỏa ấm lên.
Câu 4:
According to Christopher McKay, the possibility of transforming Mars
According to Christopher McKay, the possibility of transforming Mars
Đáp án chính xác
Lời giải của GV VietJack
Chọn đáp án D
Giải thích: Ta có thể thấy Christopher McKay nói rằng "But now it's starting to look practical. We could begin work in four or five decades."nghĩa là “Bây giờ thì dự án bắt đầu có sự khả thi. Chúng ta có thể tiến hành dự án trong bốn đến năm thập kỉ”. Một thập kỉ là 10 năm vậy nên bốn đến năm thập kỉ tức là 40 - 50 năm
Dịch: Có thể tiến hành trong 40 đến 50 năm.
Câu 5:
According to the passage, the basic knowledge needed to transform Mars comes from
According to the passage, the basic knowledge needed to transform Mars comes from
Đáp án chính xác
Lời giải của GV VietJack
Chọn đáp án B.
Giải thích: Dựa vào câu “But as researchers develop a more profound understanding of how Earth’s ecology supports life, they have begun to see how it may be possible to create similar conditions on Mars”, tạm dịch là “Nhưng khi các nhà nghiên cứu phát triển sự hiểu biết sâu sắc hơn về cách hệ sinh thái của Trái đất liên quan đến sự sống, họ đã bắt đầu nghiên cứu cách có thể tạo ra các điều kiện tương tự trên sao Hỏa”.
Dịch: Hiểu biết về hệ sinh thái của trái đất
Nhà sách VIETJACK:
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Câu 7:
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
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