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When discussing the causes of animal end...

    When discussing the causes of animal endangerment, it is important to understand that individual species are not the only factors involved in this difficult situation. Endangerment is a broad _________, one that involves the habitats and environments where species live and interact with one another. Although some measures are being taken to help specific cases of endangerment, the universal problem cannot be solved until humans _________ the natural environments where endangered species live. There are many reasons why a particular species may become endangered, but habitat destruction is on top.

Our planet is continually changing, causing habitats to be altered and modified. Natural changes tend to occur at a(n) _________ pace, usually causing only a slight _________ on individual species. However, when changes occur at a fast pace, there is little or no time for individual species to _________ and adjust to new situations. This can create disastrous results, and for this reason, rapid habitat loss is the primary cause of species endangerment. The strongest _________ in rapid habitat loss are human beings. Nearly every region of the earth has been affected by human activity, particularly during this past century. The loss of microbes in soils that _________ supported tropical forests, the extinction of fish and various aquatic species in polluted habitats, and changes in global climate brought about by the _________ of greenhouse gases are all results of human activity.

It can be difficult for an individual to _________ the effects that humans have had on specific species. It is also hard to identify or ____________ human effects on individual species and habitats, especially during a human lifetime. But it is quite ____________ that human activity has greatly contributed to species endangerment. ____________, although tropical forests may look as though they are thick and healthy; they are____________ highly susceptible (易受影响的) to destruction. This is because the soils in which they grow ____________ nutrients. It may take centuries to re-grow a forest that was cut down by humans or destroyed by fire, and many of the world’s severely threatened animals and plants live in these forests. If the current rate of forest ____________ continues, huge quantities of plant and animal species will disappear.

1.A.remark B.issue C.project D.experiment

2.A.worsen B.protect C.seek D.ignore

3.A.extreme B.favorable C.gradual D.rapid

4.A.command B.spirit C.impact D.expectation

5.A.react B.boost C.express D.announce

6.A.sports B.meanings C.forces D.crimes

7.A.usually B.formally C.freely D.formerly

8.A.escape B.goal C.release D.origin

9.A.update B.recognize C.cover D.remind

10.A.predict B.devote C.struggle D.transfer

11.A.obvious B.vital C.contemporary D.selfish

12.A.In short B.In a word C.As a result D.For example

13.A.naturally B.completely C.fully D.actually

14.A.contain B.lack C.reduce D.limit

15.A.growth B.loss C.extension D.planting

 

1.B 2.B 3.C 4.C 5.A 6.C 7.D 8.C 9.B 10.A 11.A 12.D 13.D 14.B 15.B 【解析】 本文是一篇说明文,介绍了人类活动造成了野生物种栖息地的迅速丧失,要想解决动物濒危这一问题,人类需要保护濒危物种生存的自然环境。 1.考查名词词义辨析。句意:濒危是一个广泛的问题,涉及到物种生存和相互作用的栖息地和环境。A. remark评论;B. issue问题;C. project工程;D. experiment实验。根据上文中的“animal endangerment”可知,动物濒危是一个问题,空后的“the universal problem”也是提示,故B项正确。 2.考查动词词义辨析。句意:虽然正在采取一些措施来帮助解决特定的濒危情况,但只有人类保护濒危物种生存的自然环境,这个普遍的问题才能得到解决。A. worsen恶化;B. protect保护;C. seek寻求;D. ignore忽视。根据空后的“the natural environments where endangered species live.”可知,要想解决动物濒危问题,人类需要保护濒危物种生存的自然环境,故B项正确。 3.考查形容词词义辨析。句意:自然变化往往是渐进的,通常只对个别物种造成轻微的影响。A. extreme极端的;B. favorable有利的;C. gradual逐渐的;D. rapid快速的。根据空后的“usually causing only a slight ____4____ on individual species.”可知,这种变化通常只对个别物种造成轻微的影响,这说明自然变化是渐进的,故C项正确。 4.考查名词词义辨析。句意同上。A. command命令;B. spirit精神;C. impact影响; D. expectation期待。根据常识可知,自然变化会对物种造成影响,have/cause an impact on sth表示“对……有/产生影响”,故C项正确。 5.反应;B. boost促进;C. express表达;D. announce宣布。根据空后的“adjust to new situations”可知此处指“对新情况做出反应和调整”,故A项正确。 6.考查名词词义辨析。句意:造成栖息地迅速丧失的最大力量是人类。A. sports运动;B. meanings含义;C. forces力量;D. crimes犯罪。空后一句说地球上几乎每一个地区都受到人类活动的影响,特别是在上个世纪,因此人类是造成栖息地迅速丧失的最大力量,故C项正确。 7.考查副词词义辨析。句意:以前支持热带森林的土壤中微生物的减少,鱼类和各种水生物种在受污染的栖息地中灭绝,以及温室气体排放所带来的全球气候变化,这些都是人类活动的结果。A. usually通常;B. formally正式地;C. freely自由地;D. formerly以前、原来。根据空后的“supported tropical forests”及“all results of human activity”可知,土壤中微生物以前支持热带森林,但现在被人类活动破坏了,故D项正确。 8.考查名词词义辨析。句意同上。A. escape逃跑;B. goal目标;C. release释放;D. origin起源。根据空后的“of greenhouse gases are all results of human activity”可知此处指“温室气体的排放”,故C项正确。 9.更新; B. recognize承认、认识到;C. cover 覆盖;D. remind提醒。根据空后的“the effects that humans have had on specific species”可知,一个人很难认识到人类对特定物种的影响,故B项正确。 10.预测;B. devote致力于;C. struggle奋斗;D. transfer转让。根据空前的“identify”可知,很难确定或预测人类对个别物种和栖息地的影响,故A项正确。 11.考查形容词词义辨析。句意:但很明显,人类活动对物种的濒危起到了很大的影响。A. obvious明显的;B. vital至关重要的;C. contemporary同时代的;D. selfish自私的。根据空后的“that human activity has greatly contributed to species endangerment.”可知,人类活动对物种的濒危起到了很大的影响,这一点是很明显的,故A项正确。 12.考查介词短语辨析。句意:例如,尽管热带森林看起来茂密而健康,它们实际上极易受到破坏。A. In short总之;B. In a word总之;C. As a result结果;D. For example例如。空前一句说人类活动对物种的濒危起到了很大的影响,此处是对这一句的举例证明,需要用for example引出例子,故D项正确。 13.考查副词词义辨析。句意同上。A. naturally自然地;B. completely完全地;C. fully 充分地;D. actually实际上。根据空前的“although tropical forests may look as though they are thick and healthy”可知,尽管热带森林看起来茂密而健康,它们实际上极易受到破坏,故D项正确。 14.包含;B. lack缺乏;C. reduce减少;D. limit限制。空前一句说尽管热带森林看起来茂密而健康,它们实际上极易受到破坏,此处解释原因——它们生长的土壤缺乏养分,所以它们并不健康,故B项正确。 15.考查名词词义辨析。句意:如果森林继续以目前的速度消失下去,大量的动植物物种将会消失。A. growth增长;B. loss损失、失去;C. extension延伸;D. planting种植。根据空后的“huge quantities of plant and animal species will disappear.”可知,如果森林继续以目前的速度消失下去,大量的动植物物种将会消失,故B项正确。
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