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
Should we care if over 150 known species of animals have【C1】______from the earth in the last fifty years? Should we be concerned
Should we care if over 150 known species of animals have【C1】______from the earth in the last fifty years? Should we be concerned
admin
2019-01-06
51
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."
【C17】
选项
A、upon
B、to
C、with
D、from
答案
A
解析
这个词应与后面的rely搭配,即rely upon“依靠”。
转载请注明原文地址:https://kaotiyun.com/show/k8UO777K
0
考博英语
相关试题推荐
Fearanditscompanionpainaretwoofthemostusefulthingsthatmenandanimalspossess,iftheyareproperlyused.Iffired
Ingeneral,oursocietyisbecomingoneofgiantenterprisesdirectedbyabureaucraticmanagementinwhichmanbecomesasmall,
Salesmendependupontheperson-to-personapproachintryingtopersuadeconsumerstobuy.Advertising,however,hastodependu
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsforreducingtheeffectsofextremeheat.【C1】______ad
Amongthegreatcitiesoftheworld,Kolkata(formerlyspeltasCalcutta),thecapitalofIndia’sWestBengal,andthehomeofne
ThegeologyoftheEarth’ssurfaceisdominatedbytheparticularpropertiesofwater.PresentonEarthinsolid,liquid,andga
Hedoesn’tseemtobeableto______anyinterestinhisstudies.
ManycountrieswillnotallowcigaretteadvertisingintheirnewspapersoronTVespeciallysincetheadvertisementsareusually
ManycountrieswillnotallowcigaretteadvertisingintheirnewspapersoronTVespeciallysincetheadvertisementsareusually
Heisawell-trainedmusicianwhocanperceiveverysmalldifferencesinsound.
随机试题
混合牙列重点防治的牙齿是
医师胡某与一药厂达成协议后,在处方时使用了该药厂生产的药品,并收受了该厂给予的提成。对于胡某的违法行为,有权决定给予行政处分并没收其违法所得的部门是
国家信贷指政府的借贷活动,主要形式是由政府发行债券以筹集资金,作为国家信贷的工具为公债和国库券。()
高度在20m处的作业属于()高处作业。
新股发行议案经董事会表决通过后,上市公司应当在()内报告证券交易所。
甲公司、乙公司和丙公司均为增值税一般纳税人,有关资料如下:(1)2016年10月12日,经与丙公司协商,甲公司以一项非专利技术和对丁公司股权投资(划分为交易性金融资产)换入丙公司持有的对戊公司长期股权投资。甲公司非专利技术的原价为1200万元,已摊销20
工资结构线愈陡,各等级之间薪酬差距()。
劳动法律事实可以分为()
要具备较强的综合语言运用能力,必须有语言技能、语言知识、()、()和文化意识作基础。
新课程的核心理念是()
最新回复
(
0
)