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In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be____36____ .
Today things are___37_____, the world has become too___38____ . We are using up our natural resources too quickly, and at the same time we are___39____ our environment with dangerous chemicals. If we continue to do this, human life on the earth ___40____survive.
Everyone___41_____ today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing__42_____ , more and more fish are caught. We know that if too many trees are cut down, ___43____will disappear and nothing will grow on the land. Yet, we ___44_____to use bigger and more powerful machines to __45____more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die.___46_____, in most countries wastes are ___47______put into rivers or into the sea, and there are _48_____laws to stop this.
We know, too, that if the___49____ of the world continues to rise at the present rate, in a few years, there will not be enough___50_____. What can we do to solve these problems ?
It we eat more vegetables and less___51____, there will be more food available for everyone. Land that is used to grow crops __52_____five times more people than land where animals are kept.
Our natural resources will _53_____longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth__54_______ .
Finally, if we educate people to think about the problems, we shall have a better and clearer ___55____in the future.

【小题1】
A.beautifulB.unlimitedC.rareD.valuable
【小题2】
A.commonB.the sameC.changeableD.different
【小题3】
A.crowdedB.smallC.dirtyD.busy
【小题4】
A.protectingB.savingC.pollutingD.fighting
【小题5】
A.may notB.will notC.shall notD.could not
【小题6】
A.wondersB.realizesC.considerD.discovers
【小题7】
A.polesB.boatsC.methodsD.ideas
【小题8】
A.mountainsB.the seaC.treesD.forests
【小题9】
A.continueB.haveC.oughtD.will go on
【小题10】
A.growB.plantC.saveD.cut down
【小题11】
A.ThusB.HoweverC.Generally speakingD.Therefore
【小题12】
A.stillB.evenC.alsoD.certainly
【小题13】
A.too manyB.a fewC.someD.few
【小题14】
A.productionB.pollutionC.populationD.revolution
【小题15】
A.housesB.vegetablesC.foodD.lives
【小题16】
A.fruitB.meatC.fishD.grain
【小题17】
A.feedsB.increasesC.suppliesD.helps
【小题18】
A.useB.stayC.keepD.last
【小题19】
A.controlB.bornC.planD.reward
【小题20】
A.natureB.seaC.planetD.Forest


【小题1】B
【小题2】D
【小题3】A
【小题4】C
【小题5】B
【小题6】B
【小题7】C
【小题8】D
【小题9】A
【小题10】D
【小题11】B
【小题12】A
【小题13】D
【小题14】C
【小题15】C
【小题16】B
【小题17】A
【小题18】D
【小题19】A
【小题20】C 

解析试题分析:
【小题1】B。beautiful“美丽的”, unlimited“无限的”;rare“稀罕的,稀少的”; valuable“有价值的”。根据前面的There were few people on the earth可知此处指在过去资源是无限的。
【小题2】D。与过去形成对比,表示现在情况不同了。
【小题3】A。根据第一段的There were few people on the earth可知过去地球上人很少,而现在人很多、很拥挤。
【小题4】C。protect“保护”,save“节约,拯救”; pollute“污染”;fight“斗争,打架”。根据句中的with dangerous chemicals可知此处指人们正在用有害的化学物质污染环境。
【小题5】B。句意:如果我们继续这样,地球上的人类就不能生存下去。
【小题6】B。wonder“想知道”; realize“意识到”; consider“考虑,认为”; discover“发现”。根据第四段的We realize that if rivers are polluted with waste products from factories,  we will die. 可知应选B。句意:现在每个人都意识到如果从海中捕捞太多的鱼,不久就没有鱼了。
【小题7】C。modern fishing methods表示“现代的捕鱼方法”。
【小题8】D。根据前面的We know that if too many trees are cut down可知此处应选forests(森林)。
【小题9】A。根据Yet可知,虽然人们意识到过度砍伐树木的危害,但人们还是继续那样做。干扰项是C、D。若选C、D,keep与 go on后面要跟v. -ing形式。
【小题10】D。根据Yet可知,虽然人们意识到过度砍伐树木的危害,但人们仍然用大型机械砍伐树木。
【小题11】B。根据上下文可知此处表示转折,however经常位于句首、句中或句末,且用逗号与主句隔开。but也表示转折,但不用逗号与主句隔开。A、D两项表示“因此”。
【小题12】A。句意:然而在很多国家,垃圾仍然被扔进河流或大海。
【小题13】D。根据语境可知此处应指几乎没有法律来制止这样做。
【小题14】C。production“生产”;  pollution“污染”;  population“人口”;  pronunciation“读音”。根据句中的there will not be enough food以及下文的The world population will not rise so quickly可知此处应选C。
【小题15】C。solve these problems表示“解决这些问题”,干扰项是A、B。若选A,A项应为work out。若选B,B项应为deal with。
【小题16】B。句意:如果我们多吃蔬菜少吃肉,那么每个人就会有更多的食物可以吃。
【小题17】A。feed more people表示“养活更多的人”。
【小题18】D。句意:如果我们学会对资源循环利用,我们的自然资源就会更持久些。此处last是动词,表示“持续”。
【小题19】A。birth control表示“计划生育”。
【小题20】C。planet此处指“星球”,即我们的地球。
考点:考查环境类完型
点评:本文的话题是考生非常熟悉的话题—环境保护。整个完形填空大题,设空科学合理,考生不难从中领会大意,从而下手会比较顺利,从选项中可以看出,本大题主要还是考查了词汇的辨析与运用,但更加注重综合语言能力的运用,需要根据故事情节,了解词汇用法的同时,结合语境,做出准确的判断

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