Unit 4 Topic 2 同步练习题 基础部分 一、根据汉语意思写出下列单词的正确形式 1．On the Mid-Autumn Day, people enjoy (欣赏) the moon at night. 2．Linda likes traveling very much and now she is planning her trip with (兴奋). 3．When Mary got to school, she (意识到) that her schoolbag was at home. 4．An adult elephant (重量是……) many times more than a baby one. 5．A wonderful program (上演) tonight. 6．We don’t think it’s too difficult to (掌握) a foreign language. 7．Please be careful about your camera, or it will be (偷) sooner or later. 8．Alice likes dancing and she dreams of being a ballet (舞蹈家) in the future. 9．Yuan Longping is called “Father”of Hybrid rice, and his achievements go (超出) China. 10．The (旅行) ends in the ancient city of Marrakesh. 二、 用所给词的正确形式填空 11．Since the big fire has already been under control, no more firemen (send) there. 12．If you don’t work hard, you (ask) to leave sooner or later. 13．It’s said that the new bridge (complete) at the end of 2025. 14．Jack finally got A in the English exam. He looked at the exam result with . (excite） 15． speaking, smoking is harmful to our health. (general) 三、选词填空 用所给词的适当形式填空。每词限用一次。 attend；steal；regret；master；admire 16．My teacher explains the grammar so clearly that we all it already. 17．Everyone in my town the moon on Mid-Autumn Day. 18．Tom’s bike last week. So he had to buy a new one. 19．—Where are your friends —They a meeting in the office. 20．You later if you do it like this. 综合部分 阅读理解 A A quasar (类星体) is an extremely bright object with a super-massive (超大质量的) black hole. About a million quasars have been known to humans. Quasar J0529-4351 is one of them, with 12 billion light years from the earth. We have been able to see Quasar J0529-4351 since 1980. But it was so bright that people mistook it for a foreground star (前景恒星). In 2023, scientists finally identified (确认) it as a quasar as well as the brightest object in the universe (宇宙), 500 trillion (万亿) times brighter than the sun. In 2024, a study on the quasar came out in Nature Astronomy (《自然·天文学》). It was done by Australian scientist Christian Wolf and his team. According to the recent study, Quasar J0529-4351 has a huge “stomach”. Like other quasars, it keeps taking in gas and dust in the space. In fact, it has the largest accretion disk (吸积盘) in the universe. It “eats” about as much as the sun’s mass (质量) every day, which makes it grow very fast. And we shouldn’t be surprised at how bright it is, because the brightness has much to do with how much it “eats”. However, Quasar J0529-4351 is not the largest object. TON 618, found in 1957, is one of the largest black holes. It can hold 66 billion stars the size of the sun inside, while Quasar J0529-4351 is about 19 billion times larger than the sun. Scientist have already learned that a black hole is formed when a star collapses (坍塌) on itself. And it grows by taking in ... ...
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