备战2020年高考英语一轮精品复习Unit 4 Astronomy： the science of the stars 练习

必修3 Unit 4 课下作业（一~三）课下作业（一）考点过关针对练Ⅰ.单词拼写1．Accustomed to the climate (气候) in the countryside, the old couple prefer not to move to the city.2．They completely ignored these problems as if they never existed (存在)．3．We are so far from the earth that we can't feel its pull (牵引力)．4．He was quite puzzled (困惑的) about what to do next, so he turned to his father for help.5．The old scientist told his students that scientific theories (理论) must be based on facts.6．He found something floating (漂浮) on the lake, which frightened him.7．A truck went out of control and crashed (碰撞) into the back of a bus.8．I could feel the wind gently (温和地) blowing through my hair and it was a warm summer breeze.9．Newton was one of the greatest physicists (物理学家) in the world and many people admire him very much.10．Unlike (与……不同) most people in the office who come to work by car, I usually come to work by bus.Ⅱ.语境语法填空1．The ❶existence (exist) of terrorism lets the world not be stable.Terrorists'activities, many of which are linked to ❷religious (religion) extremism (极端主义), have resulted in a global disaster.They not only bring threat to the safety of humans, but have a ❸harmful (harm) effect on economic growth.Many people are forced to flee their homes because of growing fears of ❹violence (violent)．All governments are paying great attention to this issue, but to stop terrorism is indeed a systematic project, which requires effort, wisdom and cooperation.2．A conflict ❶broke (break) out when the villagers tried to prevent the factory ❷from sending waste water into their fields.The villagers had been watching out ❸for the waste water for some time.They found it was very harmful ❹to their health as well as their crops.Officials came just in time ❺to_stop (stop) the situation getting worse.3．The development of science makes it possible for us ❶to_visit (visit) the moon.But you will find ❷it difficult to stay there.The earth is 49 times ❸the size of the moon.As a result, the gravity of the earth is about six times as great as ❹that of the moon.When we get closer to the moon, we will feel its gravity pulling us, but it is not as strong ❺a pull as the earth's.Ⅲ.语境改错1．文中共有6处错误，每句中最多有两处，请找出并改正。

It is reported that we have had three times as much fires as last st Saturday, a big fire break out in a department store in Guangming Road.There were such many people and cars in the street that firefighters couldn't get through, which made it difficult for the fire trucks get close to the scene.Depending on their rich experience, the firemen prevented the fire spread eventually.It is obvious that whether we can stop fire disasters depends on whether we have a sense of safe.答案：第一句：much→many第二句：break→broke第三句：such→so; 第二个get前加to第四句：spread→spreading第五句：safe→safety2．文中共有4处错误，每句中最多有一处，请找出并改正。

Whether there is life on Mars is still puzzle to us.The earth is six times big than Mars.There is almost no oxygen on Mars and this makes impossible for life to exist.If we are to go to Mars one day, we should have to take along our own oxygen, food, clothing or shelter.答案：第一句：puzzle前加a第二句：big→bigger第三句：impossible前加it第四句：or→andⅣ.根据提示补全句子1．显而易见，正是团队合作才使得他们去想去的地方成为可能。

(make it＋adj.＋for sb.to do)Obviously, it is the teamwork that_makes_it_possible_for_them_to_go anywhere they want to.2．既然我们谁也不知道她的电话号码，只有派人去把消息告诉她了。

(now that)Now_that_none_of_us_knows_her_telephone_number,_we will have to send someone to deliver the message.3．李明的手机看起来和张华的一样，但价格是他的两倍。

(倍数表达法)Li Ming's mobile phone looked just the same as Zhang Hua's, but it cost twice_as_much_as his.4．这些游客们回到宾馆，又累又困。

(形容词短语作状语)These travelers returned to the hotel, tired_and_sleepy.5．当这个教授出现时，所有的学生欢呼起来。

(cheer)When the professor turned up, all_the_students_cheered_up.6．我的父母一天天的变老，该轮到我开始照顾他们的时候了。

(turn)My parents are getting older and older, so it_is_my_turn_to_start looking after them.课下作业（二）话题阅读培优练Ⅰ.根据提示填空With the development of modern science and technology, we have ❶made_it_possible_to_explore_space (使探索太空成为可能)．While an increasing number of citizens claim that this kind of launch is ❷a_waste_of_time_and_money (浪费时间和金钱) because they hold the view that it can not bring any benefits for them.However, ❸I_hold_the_different_opinions (我持不同的意见)．❹There_is_no_doubt_that (毫无疑问) space exploration will spend much money.However, ❺in_the_long_run (从长远看), it is a long investment and will be ❻beneficial (benefit) to us in the future.To begin with, space ❼exploration (explore) will bring benefits for us to search for natural resource.That is to say, other planets may be richin ❽various (variety) resources that are in great shortage on the earth.It is reported that Mars ❾contains (contain) a great deal of natural gas and iron.Moreover, engineers have also noticed that these resources on the planet are able to explore and can ❿be_used (use) in the earth if they could solve the problem of transportation.Ⅱ.片段选词填空❶planets of the solar system.There is no liquid water on Mars.With thin carbon dioxide and dust in the atmosphere it is cold and dry all year round.In winter the cold temperature can ❷reach minus 130 degrees centigrade while in summer time it can rise to 27 degrees Celsius.With the rapid ❸development of science and technology, the Mars will change a lot in many ways in the future.Big houses are made by special material which could ❹prevent the radiation of the sun.Moreover, fruits and vegetables on Mars are more ❺nutritious than those on the earth.Also, new energies on Mars do not ❻produce carbon dioxide, or create greenhouse effect.We will find the Mars haven't been polluted.Air and water becomes tidier and ❼fresher than our earth.On the one hand, we can study in the spaceship and work by computer at home instead of going to work regularly.On the other hand, it is very easy for us to visit other stars by spaceship.I hope all these can ❽come_true.But first, we must ❾treasure and protect Mars and avoid it becoming another polluted earth.If all of us try our best to do it, we will ❿enjoy_our_life.课下作业（三）高考语篇提能练Ⅰ.阅读理解(2019·南昌市二模)Astronomers (天文学家) say they are on the point of finding planets like Earth orbiting other stars, which is a key step in determining if we are alone in the universe.A top NASA official and other leading scientists say that within four or five years they should discover the first Earth-like planet where life could develop, or may have already. A planet close to the size of Earth could even be found sometime this year.At the annual American Astronomical Society conference this week, each discovery involving so-called “exoplanets” — those outside our solar system — pointed to the same conclusion: Quiet planets like Earth where life could develop probably are plentiful.NASA's new Kepler telescope and a lot of new research from the suddenly hot and competitive exoplanet field caused noticeable buzz at the meeting. Scientists are talking about being at “an incredible special place in history” and closer to answering a question that has dogged humanity since the beginning of civilization. “Are we alone? For the first time, there's an optimism that sometime in our lifetimes we're going to get_to_the_bottom_of that，”said Simon Worden, an astronomer who heads NASA's Ames Research Center. “If I were a betting man, which I am, I would bet we're not alone.”“These are big questions that reflect upon the meaning of the human race in the universe，” the director of the Vatican Observatory, the Rev. Jose Funes, said on Wednesday in an interview at this week's conference.Worden told The Associated Press: “I would certainly expect in the next four or five years we'd have an Earthsized planet in the habitable (可居住的) zone.”语篇解读：天文学家说，他们即将在其他恒星周围找到类似地球的行星，在那里生命可以形成，或者可能已经形成。