首页
登录
职称英语
Should we care if over 150 known species of animals have【C1】______from the e
Should we care if over 150 known species of animals have【C1】______from the e
游客
2025-01-21
33
管理
问题
Should we care if over 150 known species of animals have【C1】______from the earth in the last fifty years? Should we be concerned that there are【C2】______thousands of species whose very existence is【C3】______endangered—largely because of our activities?【C4】______, after all, is the natural end of populations. Species are born, then【C5】______, and then die. Some live a【C6】______time, perhaps millions of years; some die more quickly. We have【C7】______the extinction of many species we know about, and we have undoubtedly sealed the【C8】______of others. In fact, there are undoubtedly many other species that have lived among us during our time on earth, but that have disappeared as a(n) 【C9】______of our activities without our ever having known they existed.
It is hard to explain the rationale of many of us who are concerned about such matters. I have never seen a sea whale,【C10】______I don’ t want them to become extinct. Moreover, I felt this way long before I understood anything about how they might be an important part of an ecosystem. Possibly such feelings merely reflect the cultural attitude that it is "nice" to wish other living things well; thus, the attitude is【C11】______. I feel nice.
There are, of course, more rational reasons for【C12】______the extermination of any species. For one thing, the kind of attitude that encourages or sanctions the destruction of other species is a threat【C13】______our own wellbeing. If such an attitude exists, we ourselves might【C14】______victim to it. living things(including us)might be expected to fare better where there is【C15】______for life. The extinction of other species could also threaten us【C16】______by simplifying the system of which we are a part or by destroying parts of the ecosystem【C17】______which we directly rely. For example, if we continue to poison the oceans【C18】______we are willing to believe only a few bottom dwellers are affected, we might【C19】______overstep some critical threshold and trigger the wholesale death of plankton, thus finding ourselves without a major【C20】______of the world’s food and with our oxygen supplies dwindling. [br] 【C13】
选项
A、for
B、to
C、at
D、with
答案
B
解析
threat后跟介词to。
转载请注明原文地址:http://tihaiku.com/zcyy/3923176.html
相关试题推荐
AnumberofanimalsinAesop’sfablesareportrayedasbeingcrafty.A、vainB、vi
Ingeneral,theamountthatastudentspendsforhousingshouldbeheld______to
Forthesuccessoftheproject,thecompanyshould______themostoftheopportun
Animalsthatcouldnot______themselvestothechangedenvironmentperishedandt
Thatshouldbeanexcellentopportunityofyoutosaywhatyouthink.A、opportuni
Somepeoplethinkmoreofanimalsthanwillofchildren.A、theyhaveB、theyhadC
Thepreservedfoodshouldretainpalatableappearance,flavor,andtexture,asw
Thedoctor’s______wasthatsheshouldgoandseethespecialistinthisfield.A、
Somepeoplethinkmoreofanimalsthanwillofchildren.A、theyhaveB、theyhadC
Peoplewhosepropertyisstolenshouldreporttothepolice.A、hadstolenB、isbe
随机试题
Formanypeopletoday,readingisnolongerrelaxation.Italsomeanswork.Tok
Whatkindsofpeopleareinhighdemandonthejobmarket?[br]DavidBirchclai
若两台水泵满足几何相似和()的条件,则称为工况相似的水泵,符合叶轮的相似定律
某工厂业务处理系统的部分需求为:客户将订货信息填入订货单,销售部员工查询库存管理
似蚓蛔线虫的感染阶段是A.未受精蛔虫卵 B.感染期蛔虫卵 C.新鲜蛔虫卵
与肾相关的组合是( )。A.脉、面、舌 B.皮、毛、鼻 C.肉、四肢、口、
A.滋阴潜阳B.补肺胃生津C.软坚散结D.补肝肾明目E.益肾健骨龟甲与鳖甲均能
材料1:科技创新是实现中华民族伟大复兴的强大驱动力。研究与实验发展(RD)经费
根据《政府采购法》的规定,政府采购的主要采购方式为()A.单一来源采购B.
下列关于可转债担保的表述,正确的有()。 A.设定抵押或质押的,抵押或质押财产
最新回复
(
0
)