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
The Earth has been stripped of up to 90% of its species five times before in the past 450 million years. Now it’s about to happe
The Earth has been stripped of up to 90% of its species five times before in the past 450 million years. Now it’s about to happe
admin
2014-12-31
34
问题
The Earth has been stripped of up to 90% of its species five times before in the past 450 million years. Now it’s about to happen again—and this time there’s no rogue asteroid(小行星)to blame. One of the first great rules of terrestrial biology is that no species is forever. The Earth has gone through five major extinction events before. The result of all of the extinctions was the same: death, a lot of it.
As increasingly accepted theories have argued—and as the Science papers show— we are now in the midst of the sixth great extinction, the unsettlingly-named Anthropocene(人类纪), or the age of the humans.
As the authors of all this loss, we are doing our nasty work in a lot of ways. Overexploitation—which is to say killing animals for food, clothing or the sheer perverse pleasure of it—plays a big role. So we get elephants slaughtered for their tusks, rhinos poached(偷猎)for their horns and tigers shot and skinned for their pelts, until oops— no more elephants, rhinos or tigers.
Habitat destruction is another big driver, particularly in rainforests. And you don’ t even have to chop or burn an ecosystem completely away to threaten its species; sometimes all it takes is cutting a few roads across it or building a few farms or homes in the wrong spots.
Then too there is global warming, which makes once-hospitable habitats too hot or dry or stormy for species adapted to different conditions. Finally, as TIME’s Bryan Walsh wrote in last week’ s cover story, there are invasive species—pests like the giant African snail, the lionfish—which hitch a ride into a new ecosystem on ships or packing material, or are brought in as pets, and then reproduce wildly, crowding out native species.
It oughtn’ t to take appealing to our self-interest to get us to quit making such a mess of what we ’re increasingly coming to learn is an exceedingly destructible world. But it’ s that very self-interest that led us to make that mess in the first place. We can either start to change our ways, or we can keep going the way we are—at least until the Anthropocene extinction claims one final species: our own.
What is the best title for this passage?
选项
A、What Causes The Great Extinction?
B、The Sixth Great Extinction Is Underway-And We’re to Blame
C、The End of the Anthropocene
D、Quit Seeking Self-interest
答案
B
解析
主旨题。文章以之前的大灭绝开头,引入人类面临的大灭绝,在介绍了造成灭绝的原因后,提出了倡议,不仅有客观,而且有对于人类前途的担忧和建议。反观这几个题目,A只强调了客观原因,C项过于含糊,D项只提到了倡议,只有B最为全面。
转载请注明原文地址:https://kaotiyun.com/show/uDq7777K
0
大学英语四级
相关试题推荐
A、Onthetable.B、Behindhisback.C、Underhisbottom.D、Onhislap.B事实细节题。由“ifyourhandsaretiedbehindyourback,youwill
Thebenefitsofquittingsmoking—reducedriskofcancerandmanyotherhealthproblems—areknown.Butformillionsofsmokers,t
A、Becauseshedoesn’twanttorelyonherrelativestoomuch.B、Becauseshehasn’tgraduatedfromuniversityyet.C、Becauseshe
A、Nobodystudiedhernowadays.B、Peopleforgother.C、Highereducationstoppedspreading.D、Mary’sinfluencelasted.D推理判断题。短文最后
A、Johnhasnoexperienceatall.B、Johnhasacharmingpersonality.C、Johnwassoluckythathegotthejob.D、Thereweresoman
A、Becauseshedoesn’twanttogowithoutanyotherwoman.B、Becauseshedoesn’twantherplanoflosingweightinvein.C、Becaus
Alotofpeopleinstinctivelybelieve—withoutreallyknowing—thatpoorreadersarenotespeciallysmart.Anewstudybyres
ThePeakTimeforEverythingA)Couldyoupackmoreintoeachdayifyoudideverythingattheoptimaltime?Agrowingbodyofre
ThefloodofwomenintothejobmarketboostedeconomicgrowthandchangedU.S.societyinmanyways.Manyin-homejobsthatuse
随机试题
封闭式基金
南唐词与西蜀词的主要区别。
男性患者,52岁。左下腹痛伴脓血便4个月,近1个月脓血便消失,便条变细。查体:无阳性体征。为明确诊断首选的检查为
对氨基水杨酸钠中特殊杂质间氨基酚的检查,是利用什么萃取出间氨基酚
A.阳虚阴盛,格阳于外的真寒假热证B.里热盛极,格阴于外的真热假寒证C.瘀血内阻所致的出血证D.中气不足所致的脘腹胀满E.实热壅积的阳明腑实证“寒因寒用”的治法适用于
2011年3月10日,A公司通过互联网发布广告称其有一批优质木材出售,价格为每立方米3500元,并附有图片和规格。B公闭见到后,即向A公司发出电子邮件,称如果价格能降低至每立方米2500元,愿意至少购买100立方米。A公司以电子邮件回复,可以商量,希望
关于本校法的说法,正确的有()等。
湘剧属于()腔系。
下列犯罪情形应当适用死刑的是()。
Parentsshouldstopblamingthemselvesbecausethere’snotalottheycandoaboutit.Imeantheteenager(十几岁的孩子)problem.Wha
最新回复
(
0
)