Read the passage carefully.1. Life exists in extreme environments on Earth, from arid deserts where water is scarce to
Read the passage carefully.
1. Life exists in extreme environments on Earth, from arid deserts where water is scarce to thermal, toxic vents in the deepest reaches of the ocean floor. But it can’t exist on every inch of the planet and scientists have discovered a place in Ethiopia where life can’t find a way, according to a new study. That place is called Dallol.
2. Scientists conducted multiple tests and found that there is no life, not even microorganisms, in Dallol. One of Earth’s most extreme environments, Dallol is incredibly hot, salty and acidic. Its ponds extend across a volcanic crater, filled with salt, toxic gases, and boiling water in response to extreme hydrothermal activity. Even in winter, daytime temperatures can exceed 45 degrees Celsius. “After looking at many more samples than previous works, we have verified that there’s no life in these salty, hot and hyperacid pools,” said Purificación López García, study author and biologist at the French National Centre for Scientific Research.
3. Scientists have long used evidence of life in extreme environments on Earth to argue that life may exist on other planets in our solar system or beyond it under similar conditions. But the researchers warned that in this case, just because there is liquid water present or because something resembles cells or other biological aspects beneath a microscope, does not mean there is life present.
4. "Our studies present proofs that there are places on the Earth's surface in which no life forms exist even though they contain liquid water," López García added. The Daliol ponds actually prevent life from forming because they contain chemical barriers like chaotropic magnesium salts that help break down hydrogen. Combined with the salty, acidic and hot environment, life receives no encouragement in the pools. "We would not expect to find life forms in similar environments on other planets," López García also stated. The researchers will continue studying the pools to determine more about the limits of life.
Trả lời cho các câu 1, 2, 3, 4, 5, 6, 7 dưới đây:
What is the passage mainly about?
Đáp án đúng là: C
Đang cập nhật ...
Đáp án cần chọn là: C
The word “arid” in paragraph 1 is closest in meaning to ______.
Đáp án đúng là: C
Đang cập nhật ...
Đáp án cần chọn là: C
What did Purificación López García confirm about the Daliol ponds after extensive testing?
Đáp án đúng là: C
Đang cập nhật ...
Đáp án cần chọn là: C
According to paragraph 3, why have scientists historically been optimistic about finding life on other planets?
Đáp án đúng là: D
Đang cập nhật ...
Đáp án cần chọn là: D
According to the passage, the Daliol ponds ______.
Đáp án đúng là: C
Đang cập nhật ...
Đáp án cần chọn là: C
The word “they” in paragraph 4 refers to ______.
Đáp án đúng là: B
Đang cập nhật ...
Đáp án cần chọn là: B
All of the following are mentioned in the passage as the conditions of the Daliol ponds EXCEPT ______.
Đáp án đúng là: C
Đang cập nhật ...
Đáp án cần chọn là: C
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