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
A、Because human beings are powerful enough to kill one another. B、Because every species will become extinct by natural selection
A、Because human beings are powerful enough to kill one another. B、Because every species will become extinct by natural selection
admin
2021-07-14
89
问题
W: Professor Smith, I wonder if you can fill me in on your lecture last Friday. I had to attend a scholarship award ceremony.
M: Oh, well, congratulations. I hope you were rewarded handsomely!
W: Well, every bit helps.
So, about your lecture, I understand you were talking about extinctions.
M: Yes. Well, the crux of my talk was just that we tend to think of extinction as a dramatic event, but most species die out over quite a period of time.
W: Why do they die off? I thought they were continuously improving themselves. Natural selection, I think you once mentioned.
M: Ah, but you see while there is natural competition between the species, what determines which species survive is largely by chance.
W: I don’t get it. Why do species bother competing?
M: Well, there are short term advantages. But many species also are helped by others. For example, the common housefly and cockroaches might have died off years ago if not for human.
W: But you’re not saying that humans are so successful merely because of chance?
M: To a certain extent, humans were initially lucky enough to have the right weather conditions and a lack of predators, but now, of course, we survive by ingenuity!
W: So we may never become extinct.
M: No, because we may be in a crash course to extinction by our continuous exploitation of the environment. We are a relatively young species and our time is not yet overdue.
W: But there are 6 billion of us!
M: Yes, and there’re many more houseflies too! Each with the capacity to spread one disease from one person to another in a fast period of time.
W: Frightening thought, isn’t it?
Questions 5 to 8 are based on the conversation you have just heard.
5. Why does the woman go to see the professor?
6. What puzzles the woman about extinction?
7. What does the professor say about human beings’ survival?
8. Why is the professor not so sure humans will never become extinct?
选项
A、Because human beings are powerful enough to kill one another.
B、Because every species will become extinct by natural selection.
C、Because there is over-population that will make the earth explode.
D、Because human beings are a young species exploiting their environment.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/GXJ7777K
0
大学英语六级
相关试题推荐
百度(Baidu)是全球最大的中文搜索引擎。2000年1月,李彦宏(RobinLi)和徐勇在北京中关村创立了百度公司,致力于向公众提供“简单、可依赖”的信息获取方式。经过多年的发展,百度已经拥有数千名研发工程师,他们掌握着世界上最为先进的搜索引擎技术。百
Throughoutevolution,humanshavebeenactive.Ourancestorschasedpreyashunter-gatherersand【C1】______frompredators.Morer
Itisclearthathumanhistorywillend:theonlymysteryiswhen.Itisalsoclearthatifthetimingislefttonature(or,if
A、Theirhardworkingspirit.B、Theirpatienceinwaitingfortheatretickets.C、Theirdelightinleisureactivities.D、Theirenth
A、Hehelpedconstructachapel.B、Hetookoverhisfamily’sbusiness.C、HetrainedunderGuggenheim.D、Heworkedonaprojecto
A、Theyhaveaccomplishedlittle.B、Theyfeelutterlyexhausted.C、Theyhaveworkedoutawaytorelax.D、Theynolongerfeelany
ResultsshowedthatatleastatenthoftheHarvardfirst-yearundergraduatespolledadmittedtohavingcheatedonanexamprior
TheCleanEnergyTransitionWillTransformOurEconomyBeyondRecognition[A]InNovember2013,morethan15,000scientistsr
OnNovember16thanumberofwell-knownmusicianswereonhandtohelpmarkthelaunchofGoogle’snewonlinemusicservice.Al
A、Hewillgetalowersumoftheaidaward.B、Hewillhaveaheartattack.C、Hewillnotbeadmittedtothedreamschool.D、Hew
随机试题
Derivationalaffixescanbefurtherdividedinto______andsuffixes.
A.EPOB.G-CSFC.TNFD.TPOE.IFN可以用于肾癌和恶性黑色素瘤治疗的细胞因子是
场外资金清算流程包括( )。
下列选项中,()属于个案辅导关系的充分必要条件。
甲向乙买了一幅名画,后来发现此画并非真迹,而是复制品。甲退回该画,并要求乙退还其支付的价款,乙拒绝,甲于是诉至法院。经查,乙在购买此画时也不知是复制品,故卖给甲时也以为是真迹,无隐瞒之情。问:此案应如何处理?
下列关于高等学历教育的说法错误的是()。
“庚款兴学”中设立的“游美学生监督处”设在()
已知B=,矩阵A相似于B,A*为A的伴随矩阵,则︱A*+3E︱=_________________________。
Tounderstandinterculturalcommunication,weseektounderstandtraditionandmodernization.
HostilitytoGypsieshasexistedalmostfromthetimetheyfirstappearedinEuropeinthe14thcentury.TheoriginsoftheGyps
最新回复
(
0
)