成都市2021级高中毕业班摸底测试（成都零诊）英语

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成都市2021级高中毕业班摸底测试（成都零诊）英语试卷答案

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11. Which word best describes the author s attitude towards the new approach?A. In different.B. Tolerant.C.Skeptical. D. Supportive.DWe now have proof that one of the key building blocks for life could have come to Earthfrom space.Samples that the Japanese space probe Hayabusa collected trom the Ryu gu asteroid(龙谷小行星) in 2019 have just been analyzed. They were found to contain organic molecules(分子) ,including uracil a nucleobase nitrogen-containing compound) that is key to RNA. the substancethat cn ables the production of proteins and life itself. Uracil(4-二氧隘啶) and other nucleobase shad previously been detected in meteorites(陨星) that fell to Earth reports Popular Mecha mics.so the theory that life came from elsewhere is n’t new. But with the meteorites, there was alwaysthe possibility that the nucleobase s had come from the soil or water the celestial objects crashedinto Since the Hayabusa 2 spacecrat collected two samples directly from asteroid Ryu gu anddelivered them to Earth in sealed capsules says project co leader Yasuhiro Oba fromHokkaido University, contamination(污染) can be ruled out.The asteroid Samples date back tothe time our planet was forming some 4 5 billion years ago.in ding organic compounds in them adds to evidence that the precursors(初期形式) to lifeoriginated in space and were seeded on earth by meteorites billions of years ago.The discovery is important not only because it adds to our understanding of our origins butalso because it implies that the same process could have occurred elsewhere in the universe.12. What does the underlined word“They refer to?A. Proteins. B. Blocks.____C.Samples. D.Probes.13. Why are two samples sealed in capsules?A. To deliver them conveniently.B. To prevent them from being contaminatedC. To discover samples originD. To identify the time of forming the planet.

6.What is the woman mainly doing?omA. Making complaints.主主要做什么B. Quarreling with the man.CC.Seeking advice from her boss.7.What does the woman think of her job?认为工作上A

____( ) 39.We can those books to the children in poor areas to make them more useful.A.set up B.look up C. give away D.put away

成都市2021级高中毕业班摸底测试（成都零诊）英语