Unit 3 第4课时 (Section B 1a-1d)（分层作业）英语鲁教版五四学制九年级全一册

Unit 3 It must belong to Carla. 第4课时(分层作业) 基础达标 一、汉译英：单词/短语 1．追赶 2．跑步锻炼 3．一些奇怪的事情 4．穿着西装 5．赶公交车 6．拿着相机的女士 二、用适当的介词填空。 7．I saw a big bird flying the sky. 8．A strange thing happened him last week. 9．He might be running exercise. 10．The woman a camera could be the TV news. 11．W had a lot of delicious food the picnic. 能力提升 三、单项选择 12．The boy with __ _ unusual face said that he had seen _ __ UFO in the sky. A．a; a B．an; a C．a; an D．an; an 13．They had to drive very quickly in order to __ __ the train. A．by B．taking C．catch D．on 14．Don’t always sit at the desk and do ______. You need more _____ if you want to keep healthy. A．exercise; exercises B．exercises; exercises C．exercises; exercise D．exercise; exercise 15．Several policemen ________ that thief and finally caught him. A．dealt with B．ran after C．worried about D．divided up 16．---____ should get the job, Peter or Sandy? ---I think Sandy should get the job. A．Do you think whose B．Whose do you think C．Who do you think D．Do you think who 17．---- Is that Mr. Green? --- Impossible. He has gone to America. It ------be him. A．could B．must C．can`t D．might 拓展训练 四、阅读单选 When you look up into the sky at night, have you ever felt that your eyes are deceiving you? It seems that stars are moving all the time. Actually, there’s nothing wrong with your eyes. This twinkle (闪烁的) effect is called scintillation (闪烁现象). Scintillation happens because of air movement in the earth’s atmosphere (大气). Light is “bent (弯曲)” when it travels through different parts of the earth atmosphere. As the air in the earth’s atmosphere is moving all the time, the light traveling through the atmosphere makes the stars look as if they are moving, too. The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, you will see that the image (影像) in the distance is not clear and things move slightly. You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water. This twinkling effect causes a lot of problems for astronomers (天文学家), because they cannot observe the stars clearly. So, a telescope was needed in space so that the air movements in the atmosphere could be avoided. It took a long time to build the space telescope but finally in 1990, a huge space telescope called the Hubble Space Telescope was successfully sent into space. Since then, astronomers have made many important observations that have helped people understand space better. 18．The underline word “deceiving” in Paragraph 1 means ________. A．欺骗 B．帮助 C．嘲笑 D．闪烁 19．What can we learn from the second paragraph? A．How scintillation does harm to our eyes? B．How scintillation happens in the atmosphere? C．Why light can travel through the atmosphere? D．Why the atmosphere air is moving all the time? 20．When a rock is dropped into the moving water, it appears a little unclear. Why? A．Because the water is too light to lift the rock up. B．Because the light is “bent” when traveling through the water. C．Because the water becomes dirty when the light travels through it. D．Because the rock becomes dirty when the light travels through the water. 21．The underlined world “they” in Paragraph 4 refers to ________. A．stars B．problems C．telescopes D．astronomers 22．The passage is written to ________. A．explain scintillation B．explain how a telescope works C．tell something about Hubble Space Telescope D．tell us the twinkling effect causes a lot of problems 答案第1页，共2页 答案第1页，共2页 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$ Unit 3 It must belong to Carla. 第4课时(分层作业) 基础达标 一、汉译英：单词/短语 1．追赶 2．跑步锻炼 3．一些奇怪的事情 4．穿着西装 5．赶公交车 6．拿着相机的女士 【答案】 1．run after 2．run for exercise 3．strange happenings 4．wear a suit 5．catch a bus 6．a lady with a camera 【详解】 1．表示“追赶”用短语run after 。    2．表示“跑步锻炼”用短语run for exercise。     3．表示“一些奇怪的事情”用短语strange happenings 。    4．表示“穿着西装”用短语wear a suit 。     5．表示“赶公交车”用短语catch a bus 。    6．with sth表示带着某物，故此处表示“拿着相机的女士”用a lady with a camera。 二、用适当的介词填空。 7．I saw a big bird flying the sky. 8．A strange thing happened him last week. 9．He might be running exercise. 10．The woman a camera could be the TV news. 11．W had a lot of delicious food the picnic. 【答案】 7．in 8．to 9．for 10． with from 11．at 【详解】 7．句意：我在天空中看到一只大鸟。“在天空中”in the sky,介词短语作地点状语，故填in. 8．句意：上周，他发生了一件奇怪的事情。这里考查动词happen的用法，某人发生某事sth happen to sb, 故填to. 9．句意：他可能在跑步锻炼。本句是对现在进行时的可能性推测，介词短语表示目的，for可以表示目的，故填for. 10．句意：这个拿着照相机的女人可能来自电视新闻。本句是could be 表示可能性推测，根据句子结构，这里需要介词短语做定语修饰the woman, “带着，有着”with, “来自电视新闻”from the news, 故填with，from. 11．句意：我们在野餐时吃了很多美味的食物。这里表示“在野餐中”固定短语at the picnic, 介词短语作时间状语，故填at. 能力提升 三、单项选择 12．The boy with __ _ unusual face said that he had seen _ __ UFO in the sky. A．a; a B．an; a C．a; an D．an; an 【答案】B 【详解】句意：这个长相不普通的男孩儿说他在天空中看到UFO了。第一个空表示“一张不同寻常的脸”，face是可数名词，且unusual是以元音音素开头的单词，故填an; “一个不明飞行物”UFO也是可数名词，且是以辅音音素开头，故填a, 故选B。 13．They had to drive very quickly in order to __ __ the train. A．by B．taking C．catch D．on 【答案】C 【详解】句意：为了赶上火车，他们必须快点开车。by表示方式，take the train乘火车，catch the train赶上火车，on the train在火车上；根据句意可知这里表示“为了赶上火车”故选C。 14．Don’t always sit at the desk and do ______. You need more _____ if you want to keep healthy. A．exercise; exercises B．exercises; exercises C．exercises; exercise D．exercise; exercise 【答案】C 【详解】句意：不要总是坐在桌子前做练习。如果你想保持健康，你需要更多的锻炼。 考查exercise的用法。exercise意为“练习，做作业”时，为可数名词；exercise意为“锻炼，运动”，为不可数名词；根据“sit at the desk and do”可知，第一空指“做练习”，因此填exercises；根据“if you want to keep healthy.”可知，第二空指“更多锻炼”，因此用exercise。故选C。 15．Several policemen ________ that thief and finally caught him. A．dealt with B．ran after C．worried about D．divided up 【答案】B 【详解】句意：几个警察追赶那个小偷，最后把他抓住了。 考查动词短语辨析。dealt with处理；ran after追赶；worried about担心；divided up分割。根据“finally caught him”可知，警察是在“追赶”小偷。故选B。 16．---____ should get the job, Peter or Sandy? ---I think Sandy should get the job. A．Do you think whose B．Whose do you think C．Who do you think D．Do you think who 【答案】C 【详解】句意：---你认为谁应该得到这个工作，Peter还是Sandy? --- 我认为Sandy应该得到这个工作。根据答句“Sandy should get the job”所以问句是特殊疑问句，且需要特殊疑问词who, 后面的do you think是插入语，它是否存在并不影响句子的完整性，故选C。 17．---- Is that Mr. Green? --- Impossible. He has gone to America. It ------be him. A．could B．must C．can`t D．might 【答案】C 【详解】试题分析：句意：――那是格林先生吗？――不可能，他去美国了。不可能是他。A.could可能，表示对目前情况作的可能的推测；可以，表示委婉的语气；B. must必须，强调主观的愿望；一定，表示对目前作的肯定推测；C. can`t不能，表示能力；不可能，表示否定的推测；D. might可能，表示可能的推测。根据句意，他去美国了，所以那不可能是格林先生。故选C。 拓展训练 四、阅读单选 When you look up into the sky at night, have you ever felt that your eyes are deceiving you? It seems that stars are moving all the time. Actually, there’s nothing wrong with your eyes. This twinkle (闪烁的) effect is called scintillation (闪烁现象). Scintillation happens because of air movement in the earth’s atmosphere (大气). Light is “bent (弯曲)” when it travels through different parts of the earth atmosphere. As the air in the earth’s atmosphere is moving all the time, the light traveling through the atmosphere makes the stars look as if they are moving, too. The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, you will see that the image (影像) in the distance is not clear and things move slightly. You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water. This twinkling effect causes a lot of problems for astronomers (天文学家), because they cannot observe the stars clearly. So, a telescope was needed in space so that the air movements in the atmosphere could be avoided. It took a long time to build the space telescope but finally in 1990, a huge space telescope called the Hubble Space Telescope was successfully sent into space. Since then, astronomers have made many important observations that have helped people understand space better. 18．The underline word “deceiving” in Paragraph 1 means ________. A．欺骗 B．帮助 C．嘲笑 D．闪烁 19．What can we learn from the second paragraph? A．How scintillation does harm to our eyes? B．How scintillation happens in the atmosphere? C．Why light can travel through the atmosphere? D．Why the atmosphere air is moving all the time? 20．When a rock is dropped into the moving water, it appears a little unclear. Why? A．Because the water is too light to lift the rock up. B．Because the light is “bent” when traveling through the water. C．Because the water becomes dirty when the light travels through it. D．Because the rock becomes dirty when the light travels through the water. 21．The underlined world “they” in Paragraph 4 refers to ________. A．stars B．problems C．telescopes D．astronomers 22．The passage is written to ________. A．explain scintillation B．explain how a telescope works C．tell something about Hubble Space Telescope D．tell us the twinkling effect causes a lot of problems 【答案】 18．A 19．B 20．B 21．D 22．A 【导语】 本文主要介绍了一种发生在大气中的自然现象——星辰闪烁现象，并说明了其产生原因以及影响。 【详解】 18．词句猜测题。根据第一段“It seems that stars are moving all the time.”可知，星星似乎一直在移动，感觉眼睛欺骗了自己，所以deceiving含义为“欺骗”。故选A。 19．推理判断题。根据第二段“Scintillation happens because of air movement in the earth’s atmosphere (大气)... the light traveling through the atmosphere makes the stars look as if they are moving, too.”可知，我们知道了大气中的闪烁是如何发生的。故选B。 20．细节理解题。根据第二段“Light is “bent (弯曲)” when it travels through different parts of the earth atmosphere.”及第三段“You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water.”可知，当一块石头落入流动的水中时，它看起来有点不清楚，是因为光线在水中传播时会“弯曲”。故选B。 21．代词指代题。根据第四段“This twinkling effect causes a lot of problems for astronomers (天文学家), because they cannot observe the stars clearly.”可知，他们无法清楚地观察星星，此处“they”指的是天文学家。故选D。 22．主旨大意题。通读全文可知，文章主要解释了闪烁现象。故选A。 答案第1页，共2页 答案第1页，共2页 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$