高中英语Unit5Thepowe练习 人教版选修6 7页

‎　 Section Ⅱ　Warming Up & Reading—Language Points 课时作业 Ⅰ.单句语法填空 ‎1．I think they should equip their office with some new computers for some research work.‎ ‎2．Almost everyone thinks the books are suitable(suit)for children.‎ ‎3．I was waving(wave) my hand madly but he never once looked in my direction.‎ ‎4．If the bottle of gas catches fire, the whole building may be burned to the ground.‎ ‎5．Having_read (read) the chapter four times, I finally understood the author's theory.‎ ‎6．It is said that the building program has been evaluated(evaluate) for its usefulness and effect it would have.‎ ‎7．On February 11, 2007, Drew Gilton Faust was appointed as the first female president of Harvard University in 371 years.‎ ‎8．It being(be)a fine day, the children went to the park.‎ ‎9．—Do you think there is possibility that they will get married?‎ ‎—Absolutely (absolute)．They love each other very much.‎ ‎10．The robber was brought to the judge, his hands fast tied(tie)．‎ Ⅱ.单句改错 ‎1．After admiring the beautiful view，she made his way to the next destination.his→her ‎2．As far as I know，it is absolute impossible to finish it in five days.absolute→absolutely ‎3．Compared the youth to the rising sun at 8 or 9 o'clock a．m.，Mao Zedong expressed his great hope for the young men.Compared→Comparing ‎4．The government has an interest in importing scientific equipments.equipments→equipment ‎5．I was reading while the light went out.while→when Ⅲ.阅读理解 The US government has recently helped people learn more about the dangers of earthquakes by publishing a map.This map shows the chances of an earthquake in each part of the country.The areas of the map where earthquakes are most likely to occur 7‎ ‎ are called earthquake belts.The government is spending a great deal of money and is working hard to help to discover the answers to these two questions：‎ Can we predict earthquakes?‎ Can we control earthquakes?‎ To answer the first question, scientists are looking very closely at the most active fault (断层) systems in the country, such as the San Andreas fault in California.A fault is a break between two sections of the earth's surface.These breaks between sections are the places where earthquakes occur.Scientists look at the faults for changes which might show that an earthquake was about to occur.But it will probably be many years before we can predict earthquakes correctly.And the control of earthquakes is even farther away.‎ However，there have been some interesting developments in the field of controlling earthquakes.The most interesting development concerns the Rocky Mountain Arsenal earthquakes.Here water was put into a layer of rocks 4,000 metres below the surface of the ground.Shortly after this injection (注射) of water，there was a small number of earthquakes.Scientists have decided that the water which was injected into the rocks worked like oil on each other.‎ When the water “oiled” the fault，the fault became slippery and the energy of an earthquake was given out.Scientists are still experimenting at the site of these earthquakes.They have realized that there is a connection between the injection of the water and the earthquake activity.They have suggested that it might be possible to use this knowledge to prevent very big，dangerous earthquakes，that is，scientists could inject some kind of fluid like water into faults and change one big earthquake into a number of small，harmless earthquakes.‎ ‎【解题解读】　为了提高人们对地震的防范意识，美国政府加大了在防震、预测方面的投入，他们甚至在努力采取措施控制地震的发生。‎ ‎1．Earthquakes belts are ________.‎ A．maps that show where earthquakes are likely to occur B．zones with a high probability of earthquakes C．breaks between two sections of the earth's surface D．the two layers of earth along a fault 解析：选B　细节理解题。根据第一段的第三句可知，地震多发地带被称为earthquake belts。‎ ‎2．The San Andreas fault is ________.‎ 7‎ A．an active fault system B．a place where earthquakes have been predicted correctly C．a place where earthquakes have been controlled D．at the foot of the Rocky Mountain 解析：选A　细节理解题。根据第二段可知，该地区为地震比较活跃的地区。‎ ‎3．What did scientists learn about earthquakes at the Rocky Mountain Arsenal?‎ A．They occur at about 4,000 metres below ground level.‎ B．The injection of water into earthquake faults prevents earthquakes from occurring.‎ C．They are usually caused by the oil in the faults.‎ D．Harmful earthquakes could be prevented by causing harmless earthquakes.‎ 解析：选D　细节理解题。根据最后两段内容可知。‎ ‎4．What can be said about the experiments at the Rocky Mountain Arsenal?‎ A．They have no practical value in earthquake prevention.‎ B．They may have practical value in earthquake prevention.‎ C．They are certain to have practical value in earthquake prevention.‎ D．Nothing is told about their practical value in earthquake prevention.‎ 解析：选B　推理判断题。根据科学家的试验，通过向断裂带注水可以引发小地震，从而使地震的能量得到释放， 因此也就降低了大地震爆发的可能。‎ Ⅳ.完形填空 In the past，human beings did not have to think about the protection of the environment.There were few people on the earth ，and natural resources seemed to be __1__.‎ Today things are __2__ and the world has become too __3__.We are using up our natural resources too quickly and at the same time we are __4__ our environment with dangerous chemicals (化学制品)．If we continue to do this，human life on the earth __5__ survive.‎ Everyone __6__ today that if too many fishes are taken from the sea，there will soon be none left.Yet，with modern fishing __7__，more and more fishes are caught.We know that if too many trees are cut down，__8__ will disappear and nothing will grow on the earth.Yet we __9__ to use bigger and more powerful machines to __10__ more and more trees.‎ We realise that if rivers are polluted with waste products from factories, fishes will die.__11__，in most countries wastes are __12__ put into rivers or into the 7‎ ‎ sea，and there are __13__ laws to stop this.‎ We know，too，that if the __14__ of the world continues to rise at the present rate，in a few years there will not be enough __15__.What can we do to solve these problems?‎ If we eat more vegetables and less __16__，there will be more food available (可用的)for everyone.Land that is used to grow crops __17__ five times more people than land where animals are kept.‎ Our natural resources will __18__ longer if we learn to recycle (循环再用) them.‎ The world population will not rise so quickly if people use modern methods of birth __19__.‎ Finally，if we educate people to think about the problems，we shall have a better and cleaner__20__ in the future.‎ ‎【解题导语】　文章介绍了一些自然资源减少及破坏的原因及人口增长带来的影响，呼吁人们循环利用自然资源。‎ ‎1．A.beautiful　　　　　　　　 B．unlimited C．unusual D．valuable 解析：选B　根据下句可知，过去自然资源似乎是取之不尽的，所以用unlimited。‎ ‎2．A.common B．the same C．changeable D．different 解析：选D　今昔对比，现在的情况不同了。‎ ‎3．A.crowded B．small C．dirty D．busy 解析：选A　下文提到人口增长过快，世界变得拥挤了。‎ ‎4．A.protecting B．saving C．polluting D．fighting 解析：选C 　用危险的化学制品污染环境。‎ ‎5．A.may not B．will not C．shall not D．could not 解析：选B　如果我们继续这么做，人类将无法生存。‎ ‎6．A.wonders B．realises C．considers D．discovers 解析：选B　由第四段第一句话可知，我们都意识到…… ‎ ‎7．A.poles B．boats 7‎ C．methods D．ideas 解析：选C　捕鱼方法。‎ ‎8．A.mountains B．the sea C．trees D．forests 解析：选D　滥砍滥伐导致森林消失。‎ ‎9．A.continue B．have C．ought D．go on 解析：选A　然而人们“继续”我行我素。空前的yet表示转折。‎ ‎10．A.grow B．plant C．save D．cut down 解析：选D　cut down意为“砍伐”。‎ ‎11．A.Thus B．However C．Generally D．Therefore 解析：选B 　用however表示转折。‎ ‎12．A.still B．even C．also D．certainly 解析：选A　still意为“仍然”。‎ ‎13．A.many B．none C．some D．few 解析：选D　and表示递进，“没有多少法律来制止这一点”。‎ ‎14．A.production B．pollution C．population D．development 解析：选C　根据下文得知，话题已转向“人口”问题。‎ ‎15．A.houses B．vegetables C．food D．places 解析：选C　人口增长将导致无法解决的粮食问题。‎ ‎16．A fruit B．meat C．fish D．grain 解析：选B　从下一句中出现的“animals are kept”可知是meat。‎ ‎17．A.feeds B．increases C．supplies D．helps 解析：选A　feed有“喂养”的意思。‎ ‎18．A.use B．stay C．keep D．last 7‎ 解析：选D　自然资源将持续更久。‎ ‎19．A.control B．born C．plan D．pay 解析：选A　人口出生率的控制。 ‎ ‎20．A.nature B．sea C．planet D．forest 解析：选C　一个更好更干净的星球。‎ Ⅴ.短文改错 In the picture，there is a cup，as is usually presented to the winners in sports competitions.The cup is definite a symbol of a great success.But it makes me puzzled is that a magnifying glass is used to seeing its light scratch on the cup，which is not at all obvious.‎ What I see in this picture reminds me that people who use a magnifying glass to see the faults in others.Those people are usually very demanded and picky.They only see the“scratches”instead of the whole cup.As we all know，everyone had both strengths and weaknesses.Therefore，we should be objective about others' achievements rather than find faults with him on purpose.Only in this way harmony be achieved and conflicts be avoided.‎ 答案：‎ In the picture，there is a cup， is usually presented to the winners in sports competitions.The cup is a symbol of great success.But makes me puzzled is that a magnifying glass is used to its light scratch on the cup，which is not at all obvious.‎ What I see in this picture reminds me people who use a magnifying glass to see the faults in others.Those people are usually very and picky.They only see the“scratches”instead of the whole cup.As we all know，everyone both strengths and weaknesses.Therefore，we should be objective about others' achievements rather than find faults with on purpose.Only in this way harmony be achieved and conflicts be avoided.‎ 7‎ 7‎