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
103
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
【S4】
选项
答案
E
解析
转载请注明原文地址:https://kaotiyun.com/show/eOM7777K
0
大学英语四级
相关试题推荐
ProfessorSmithrecentlypersuaded35people,23ofthemwomen,tokeepadiaryofalltheirabsent-mindedactionsforafortnig
TheSacrificeatMasadaOnediscoveryalwaysleadstoanother.ArchaeologistsworkingneartheDeadSeabecamecuriousa-bo
A、Shethinksit’stoofarfromhome.B、Shelikesthenewworkingenvironment.C、Shedoesn’tlikethecompanysheworksfor.D、S
Theholidaysareatimeforeating:piesatThanksgiving,chocolatesforAdventandoverflowinggiftbasketsofcookiesandcand
Todayscientistsknowsomethingaboutthecausesofearthquakes.Whenanearthquakeoccurs,peoplemustruntoopengroundors
Todayscientistsknowsomethingaboutthecausesofearthquakes.Earthquakesoftencometogetherwith______.
A、Thecostisvery.high,andonlytherichpeoplecanaffordit.B、Thesystemsofcommunicationarenotsodeveloped.C、Thetra
Thejudge______himtospendallhisdaysinprison,forhekilledhiswife.
A、MikeisgoodatEconomics.B、MikeisgoodatPoliticalScience.C、MikelikesEconomics.D、MikelikesPoliticalScience.A男士说Mi
A、Themanshouldgotothemuseumbyregularbus.B、Thenexttrainleavesin25minutes.C、Thetrainwillarriveatthemuseumb
随机试题
对淋病描述错误的是
医学伦理学的学科性质是
测定重量差异的取样量测定融变时限的取样量
病人女性,32岁,反复反酸、嗳气3年,外院胃镜检查提示胃窦部溃疡,溃疡处有新鲜出血灶,病人近来大便性状最支持诊断的是
下列项目应计算建筑面积是()。
可适应各种地形条件,便于控制开挖面的形状和规格的爆破方法是()。
AS企业为一家粮食储备企业,2015年发生的有关政府补助业务如下。(1)AS企业粮食储备量为50000万斤。根据国家有关规定,财政部门按照企业实际储量每季度给予每斤0.039元的粮食保管费补贴,于每个季度初计算补贴并支付,2015年1月中旬收到补贴存入银
自我防御性归因是指通过强调自己对积极的、合乎期望的好结果的作用,缩小对消极的、不合乎期望的坏结果的责任来保护自尊。根据上述定义,下列属于自我防御性归因的是()。
Peopleusedtothinkthatlearningtwolanguagescreatedconfusioninthemind.Far【C1】______itwasthought,togetonerightth
窗体上有一个菜单编辑器设计的菜单。运行程序,并在窗体上单击鼠标右键,则弹出一个快捷菜单,如图所示,下列选项错误的是()。
最新回复
(
0
)