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
Over the history of the earth, millions of animal and plant species have disappeared. Most of these species disappeared, or beca
Over the history of the earth, millions of animal and plant species have disappeared. Most of these species disappeared, or beca
admin
2013-06-17
45
问题
Over the history of the earth, millions of animal and plant species have disappeared. Most of these species disappeared, or became【S1】______, because of【S2】______causes such as climatic changes or a catastrophic event, like an asteroid hitting earth. What is different today is that most species that are in danger of becoming extinct are not endangered because of natural causes but because of【S3】______activity. Today, we will be looking at the reasons that many plants and animals are endangered and how these reasons, or causes, are related to human activity.
They single most important cause of endangered species today is the【S4】______and degradation of habitat (栖息地). Most animals and plants are【S5】______live and reproduce in a specific environment, habitat. They cannot【S6】______if they lose the specific habitat that they are adapted to live and reproduce in.
There are many ways that human activity destroys habitat. For example, forests, grasslands, and deserts, which provide habitat to many plants and animals, are【S7】______in order to develop residential areas for people to live in and industrial area for people to work in. Land is also cleared to prepared it for farmers to grow crops on. Swamps and marshes, which provide habitat to many animal and plant species, are often【S8】______and filled in, also to provide land for development or agriculture.【S9】______rivers are sometimes dammed (筑坝) in order to provide people with electrical power. All of these human activities, such as clearing forests, grasslands, and deserts; draining (排水)swamps and marshes, and damming rivers【S10】______the destruction of habitats that many plants and animals need to live and reproduce in.
A) extinct B) natural C) survive D) anniversary
E) destruction F) human G) result in H) separated
I) cleared J) leave K) Finally L) correspondence
M) drained N) In addition O) adapted to
【S5】
选项
答案
O
解析
转载请注明原文地址:https://jikaoti.com/ti/3Y1FFFFM
0
大学英语四级
相关试题推荐
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeopleareeitherhappierorunhappierormoreorlesscerta
Lastyear’seconomyintheUnitedStatesshouldhavewontheOscarforbestpicture.Growthingrossdomesticproductwas4.1pe
TipsforThoseWhoTravelAloneWhenitcomestotraveling,sometimestakingajourneyalonecanbegreat.Travelingalonea
A、Shecan’trestwell.B、Shehastoomuchtoread.C、Shehastofinishajobontime.D、Shedoesn’tNikeherreadingclass.B[听力
NewHope,OldFearsBonnieKrull,54,hadalreadyhadenoughbreast-canerscaresforonelifetime,withafewtospareforr
A、Becauseheledhisteamstomanychampionships.B、Becausehesetasmanyas65differentrecords.C、Becausehestillplayedth
Theprisoner______nervouslyupanddownthecellbecausehefeltuncertainty.
A、Shehastochangethetimeforthetrip.B、Shehasn’tdecidedwheretogonextmonth.C、Shecan’taffordthetimeforthetrip
AmericansandFoodAnunusualbuttimelycartoonrecentlyappearedinthelocalnewspaper.Thesinglepanelshowedagravel-
A、Hemaylosehislifeintheocean.B、Hemaybekilledbythewhiteshark.C、Hemaybeinjuredbythewhiteshark.D、Hemayeat
随机试题
A.干扰素B.硫唑嘌呤C.环孢素D.左旋咪唑E.泼尼松抑制核酸与蛋白质合成
五行关系中,土所不胜者为
(一)资料某公司目前拥有资金2000万元。其中,长期借款800万元,年利率10%;普通股1200万元,上年支付的每股股利2元,预计股利增长率为5%,发行价格20元,目前价格也为20元。该公司计划筹集资金100万元,企业所得税税率为25%,有两种筹资方案
项目监理机构在工程施工阶段造价控制的主要任务有()。
根据《中华人民共和国招标投标法》的规定,招标代理机构与招标人、投标人串通损害国家利益、社会公共利益或者他人合法权益的,对单位直接负责的主管人员和其他直接责任人员处单位罚款数额()的罚款。
物流成本控制应以降低()作为目标。
复兴社
简述气质的体型说。
设订下面的语句:PrintIIf(x>0,1,IIf(x<0,-1,0))与此语句输出结果不同的程序段是
Whatdoesthemanaskthewomantodo?
最新回复
(
0
)