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
52
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
【S8】
选项
答案
M
解析
转载请注明原文地址:https://kaotiyun.com/show/SOM7777K
0
大学英语四级
相关试题推荐
TipsforThoseWhoTravelAloneWhenitcomestotraveling,sometimestakingajourneyalonecanbegreat.Travelingalonea
TheInternetisagiantnetworkofcomputerslocatedal]overtheworldthatcommunicatewitheachother.TheInternetisan
A、TheArcticcoast.B、Thewestcoast.C、Theeastcoast.D、ThecentralplainC事实细节题。文章中提到加拿大的中部湖区和东部地区气候变化相当大(produceconsiderabl
A、Becauseshewasdisappointedinthecollege.B、Becauseshekeptmovingallthetimeandcouldn’tconcentrateonstudying.C、Be
Astudentmustattendacertainnumberofcoursesinordertograduate,andeachcoursewhichheattendsgiveshimacreditwhic
Theholidaysareatimeforeating:piesatThanksgiving,chocolatesforAdventandoverflowinggiftbasketsofcookiesandcand
Earthquakesmayrightlyberankedasoneofthemostdevastatingforcesknowntoman:sincerecordsbegantobewrittendown,it
Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrelaxation.Onceyouareinthe【C1】______ofrushingthr
A、Inaregistryoffice.B、Inachurch.C、Byapublicannouncement.D、Secretlywiththecompanyoftwopassers-by.B文章中介绍了英国人结婚的
Thoughaskilledworker,_____________(他被公司解雇了)lastweekbecauseoftheeconomiccrisis.
随机试题
车前子不具有的功效是
单位工程施工组织设计的主要内容有()。
T日的基金份额净值在当天收市后计算,并在()日公告。
正常情况下,银行会计资本应当()经济资本的数量。
阅读图文资料,完成下列要求。图A为甲乙两地亲意图,图B为辜乙两地年内气温和降水量变化图。读图,回答下列问题。分析甲地的气候特征对当地农业生产的影响。
在四面体OABC中,=__________(用a,b,c表示).
管理的最基本形式是()。
一位药物专家只从G、H、J、K、L这5种不同的鱼类药物中选择3种,并且只从W、X、Y、Z这4种不同的草类药物中选择2种,来配制一副药方。他的选择必须符合下列条件:(1)如果他选G,就不能选H,也不能选Y;(2)他不能选H,除非他选K;
Whendochildrenstartschoolintheman’scountry?
A.publishedB.demonstrateC.cutoffD.studiedE.investigatedF.staffG.surveye
最新回复
(
0
)