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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 

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。
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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