首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
An animal species becomes extinct when it fails to produce enough young in each generation to keep pace with the death-rate. We
An animal species becomes extinct when it fails to produce enough young in each generation to keep pace with the death-rate. We
admin
2011-03-01
33
问题
An animal species becomes extinct when it fails to produce enough young in each generation to keep pace with the death-rate. We can【C1】______from fossil evidence in rocks that many living species have become extinct over the millions of years【C2】______life began. It is a natural【C3】______and extinction is the【C4】______of any animal that has specialized too far to change【C5】______its environment changes, or has to compete with a better-【C6】______and more powerful animal.【C7】______remarkable technical developments during the past few centuries, man has destroyed or【C8】______destroyed some species by killing them【C9】______such a rate that they couldn’t produce enough offspring, or by completely changing their natural environment at surprising speed.
A number of examples can be given of the way【C10】______which natural environments are being rapidly changed—Amazonia, for instance. There is every【C11】______that many species of animals will be made extinct because of these and similar【C12】______of natural vegetation. Large numbers of animals have been hunted and killed for food. The North American buffalo is a【C13】______of the near-extinction of a species through hunting. Often the numbers are【C14】______great that the hunters may not realize the danger. But even when the danger is widely【C15】______, the financial rewards for the hunters may be so great that they choose to【C16】______the threat to the species. Attitudes like this have【C17】______to hunters killing animals for furs, for ivory or merely for ornaments. A slight【C18】______on this is when tourists hunt animals for trophies. Such magnificent creatures【C19】______lions and tigers【C20】______out of existence in some parts of the world.
【C17】
选项
A、led
B、yielded
C、attributed
D、turned
答案
A
解析
A选项“引导”,B选项“产生”,C选项“归功于”,D选项“转向”,根据词义,故选A。
转载请注明原文地址:https://jikaoti.com/ti/pZWsFFFM
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Whatisthemaninterestedinatthebeginningoftheconversation?
AspeciallabattheUniversityofChicagoisbusyonly【C1】______Itisadream【C2】______whereresearchersareatwork【C3】______d
AspeciallabattheUniversityofChicagoisbusyonly【C1】______Itisadream【C2】______whereresearchersareatwork【C3】______d
Astheconversationbegins,whatarethemanandwomandoing?
Packagingisaveryimportantformofadvertising.Apackagecansometimesmotivatepeopletobuyproducts.Forexample,asmall
GenerationsofAmericanshavebeenbrought【C1】______tobelievethatagoodbreakfastisimportantforhealth.Eatingbreakfast
Finishingteacher’sevaluationsneedmaturityandobjectivity.Everysemesterwehavetheopportunitytoevaluateourinstructor
Finishingteacher’sevaluationsneedmaturityandobjectivity.Everysemesterwehavetheopportunitytoevaluateourinstructor
Whatisthemansuggesting?
What’sthewomansuggestingtotheman?
随机试题
(2015年第163题)肥厚型心肌病的肉眼病理变化有
椎动脉发自
下列关于妊娠的说法,正确的是
一名妇女近年来月经量多,经期长,白带增多,感头晕、乏力、腰背酸痛,疑为黏膜下肌瘤,最主要的依据应当是
世行、亚行贷款项目采购的一般政策包括()。
按照现行会计制度规定,下列各项中,应通过“应付工资”科目核算的有( )。
为办理国际间的货币收付、清偿国与国之间的债权债务而进行的业务活动称为()。
()是使司机积极参与导游服务工作的好方法。
Ispentagoodpartofthelastthreeweekshelpingayoungfriendlookforanapartment,andtheexperiencewasrevealing.Amon
TheCleanEnergyTransitionWillTransformOurEconomyBeyondRecognition[A]InNovember2013,morethan15,000scientistsr
最新回复
(
0
)