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
24
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."
【C6】
选项
A、long
B、short
C、comfortable
D、terrible
答案
A
解析
long一词与后面的millions of years对应,与动物们生活舒适与否没有关系。
转载请注明原文地址:https://kaotiyun.com/show/r8UO777K
0
考博英语
相关试题推荐
Sincethedawnofhumaningenuity,peoplehavedevisedevermorecunningtoolstocopewithworkthatisdangerous,boring,burd
Sincethedawnofhumaningenuity,peoplehavedevisedevermorecunningtoolstocopewithworkthatisdangerous,boring,burd
Humanbeingsaresuperiortoanimals______theycanuselanguageasatooltocommunicate.
JohnglancedatMarytoseewhatshethought,butsheremained______.
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsforreducingtheeffectsofextremeheat.【C1】______ad
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsforreducingtheeffectsofextremeheat.【C1】______ad
ThegeologyoftheEarth’ssurfaceisdominatedbytheparticularpropertiesofwater.PresentonEarthinsolid,liquid,andga
Themarveloustelephoneandtelevisionnetworkthathasnowenmeshedthewholeworld,makingallmenneighbors,cannotbeextend
ManycountrieswillnotallowcigaretteadvertisingintheirnewspapersoronTVespeciallysincetheadvertisementsareusually
Scientistsformerlyassumedthatcoralpopulationsremainedstable,deadpolypsbeingreplacedbynowonesthatbuildonthe"sk
随机试题
变换立式钻床主轴机动进给时,必须在停机后进行调整。()
简述公共政策评估的主体。
微分方程y’-ysinx=e-cosx的通解为()
左冠状动脉
不使肺泡呼吸音减弱的疾病是
关于碾压混凝土重力坝的结构特点,下列说法错误的是()。
借贷记账法试算平衡的依据是()。
居民健康问题已经成为国际社会与各国政府所关注的主要社会问题,实施基于居民健康的社会发展战略已成为推进社会和谐发展的重要措施,它不仅可以促进全社会的参与,统筹优先配置社会资源,而且可以协调政府和社会各部门之间的责任与发展目标,还可以规范居民个人的生活行为,充
求下列函数的导数.其中a≠0;
Intheadvertisement,therewasa______anda______onthebicycle.Afterhereadtheadvertisement,Tomdecidedto______.
最新回复
(
0
)