【文章內(nèi)容簡介】 kford被要求想出一個表示遇險的詞。由于往返于克羅伊登和巴黎的航班數(shù)量眾多，他選擇了Mayday，因為Mayday的發(fā)音與法語單詞aider相近，意思是“幫助我”。)”以及第二段的“in the 1920s”可知，Mayday是由一個無線電官員在20世紀20年代發(fā)明的。故選D項?！?0題詳解】主旨大意題。根據(jù)第四段中“Facing a threatening situation, pilots are required to repeat the signal three times in case of radio interference（干擾）or loud background noise. If the pilots don39。t get a reply within two minutes, they should repeat it. Once they receive a reply, more information including the code of the flight, their current situation and the number of people on board should be reported.(面對威脅的情況，飛行員被要求重復(fù)信號三次，以防無線電干擾或巨大的背景噪音。如果飛行員在兩分鐘內(nèi)沒有得到答復(fù)，他們應(yīng)該重復(fù)。一旦他們收到回復(fù)，他們應(yīng)該報告更多的信息，包括航班代碼，他們的現(xiàn)狀和機上人數(shù)。)”可知，本段主要講述了如何使用呼救信號。故選B項?！?1題詳解】推理判斷題。通讀全文可知，本文主要介紹了求救信號的產(chǎn)生和如何使用。結(jié)合選項可知，本文應(yīng)該來源于科學(xué)版面，和其它選項“運動、時尚、藝術(shù)”無關(guān)。故選D項。DNow we are in a golden age of spacesample collection and exploration. Space agencies around the world are busy collecting, or planning to collect, samples from asteroids（小行星），moons and planets and so on.China39。s Chang39。e5 mission is the most recent samplereturn mission that has been successfully pleted. On Dec 17, 2020, the Chang39。e5 lunar probe（探測器）returned home and landed in the Inner Mongolia Autonomous Region after weeks of space travel, China Daily reported. This was the world’s first lunar samplereturn mission since 1976. The mission collected 1,713 grams of samples of rocks and dust with the help of a drill and a mechanical（機械的）arm.Another space samplereturn mission was pleted on Dec 6, 2020. Japan39。s Hayabusa2 probe returned a capsule to Earth containing valuable samples from the asteroid Ryugu. This was the second time asteroid samples had ever been collected and brought back to Earth. The first asteroid samples were collected by the original Hayabusa spacecraft back in 2010.There will be more such missions in the near future. NASA39。s OSIRISREx spacecraft, which collected samples from the asteroid Bennu in October 2020, is expected to return to Earth in 2023. Russia39。s Lunar25 mission is scheduled to launch to the moon in 2021 to collect lunar samples.“I cannot emphasize enough how valuable return samples are for increasing our understanding of the origin and evolution of our solar system and our place in the universe, and how we came to be, said Ann Nguyen, a NASA planetary scientistAs for the Chang39。e5 lunar samples, scientists will conduct various analyses, tests and experiments to determine the position, structure and physical characteristics of the samples. This information will help to deepen our knowledge about the history of the moon, as well as our solar system as a whole.12. What do we know about the Chang39。e5 lunar probe?A. It was launched on Dec 17,2020.B. It pleted the most successful mission.C. It collected the world39。s first lunar sample.D. It brought back more than 1,700 grams of lunar samples.13. What does the author focus on in paragraphs 3 and 4?A. Providing examples. B. Explaining a concept.C. Drawing parisons. D. Making a summary.14. Why do we collect samples from space according to Ann Nguyen?A. To learn more about how the solar system originates and evolves.B. To determine the structure of the solar system.C. To deepen our knowledge about our place on Earth.D. To understand how water first appeared on the moon.15. Which can be a suitable title for the text?A. A golden age es B. Man explores spaceC. Space samples land D. Scientists analyse samples【答案】12. D 13. A 14. A 15. C【解析】【分析】這是一篇說明文。文章主要講述了中國嫦娥五號探測器最近成功登月完成月球采樣任務(wù)，此外日本和美國以及俄羅斯都在收集月球樣本，太空取樣的“黃金時期”已來臨。【12題詳解】細節(jié)理解題。根據(jù)第二段的“The mission collected 1,713 grams of samples of rocks and dust with the help of a drill and a mechanical arm.”(該任務(wù)借助鉆機和機械臂收集了1713克巖石和灰塵樣品。)由此可知，嫦娥五號探測器帶回了1700多克月球樣品。故選D項?！?3題詳解】推理判斷題。根據(jù)第三段的第一句“Another space samplereturn mission was pleted on Dec 6, 2020.”(另一個太空取樣任務(wù)于2020年12月6日完成），根據(jù)第四段的第一句“There will be more such missions in the near future.”（在不久的將來將會有更多這樣的取樣任務(wù)。）由此可知，第三段和第四段舉例說明了各種太空取樣任務(wù)，即作者在第三段和第四段中舉例子說明了日本和美國以及俄羅斯的各種太空取樣任務(wù)。故選A項?！?4題詳解】推理判斷題。根據(jù)第五段的“I cannot emphasize enough how valuable return samples are for increasing our understanding of the origin and evolution of our solar system and our place in the universe, and how we came to be”可知，美國宇航局行星科學(xué)家Ann Nguyen認為太空取樣任務(wù)有很大的意義，它使人類更加了解太陽系的起源和演化、人類在宇宙中的位置以及人類如何發(fā)展到現(xiàn)在。由此可知，按照Ann Nguyen的看法，人類從太空中收集樣本的目的是要了解有關(guān)太陽系如何起源和演化的更多信息。故選A項?！?5題詳解】主旨大意題。通讀全文，尤其是第一段的“Now we are in a golden age of spacesample collection and exploration. Space agencies around the world are busy collecting, or planning to collect, samples from asteroids（小行星），moons and planets and so on.”可知，現(xiàn)在我們正處于空間樣本收集和探索的“黃金時代”。世界各地的太空機構(gòu)都在忙于收集或計劃從小行星，月球和行星等收集樣本。由第二題和第三題的分析可知，日本和美國以及俄羅斯都在收集月球樣本。由此可知，文章的主要內(nèi)容是有關(guān)“太空樣本收集和探索”的，因此C項（太空采樣的來臨）符合文章的內(nèi)容，可以作為標題。故選C項。第二節(jié) (共5小題，每小題2分，滿分10分）根據(jù)短文內(nèi)容，從短文后的選項中選出能填入空白處的最佳選項,選項中有兩項為多余選項.De — stress your mind and relaxBeing a student can be overwhelming（不堪重負的）.____16____. If you39。re feeling stressed out, try some of these brain break ideas.Take a breakThe first thing to do when you feel overwhelmed is to take a deep breath. Try meditation（冥想） practices, which have been found to ease anxiety and mental stress by making you focus on your breathing. Practice gratitude and stay in the present. Play some calming music and take yourself away from your work for a little while. ___17___Exercise____18____. Whether it’s a quick walk across campus or around the block, a sweaty gym session ordoing an online workout in your living room, exercise will increase your energy, sharpen your focus, enhance your mood, improve your memory and help with impulse（沖動）control. In fact, exercise produces chemicals that are good for your brain. In other words, when you take care of your body, you take care of your brain._____19_____If you39。re feeling overworked, try using a different part of your brain to arouse some creativity. Bake a new recipe, create an artwork, or do a puzzle. ____20____. Thus, your brain can get more active in new an