首页
登录
职称英语
[originaltext]W: Professor Marnes, I wonder if you can fill me in on your lectu
[originaltext]W: Professor Marnes, I wonder if you can fill me in on your lectu
游客
2024-05-12
41
管理
问题
W: Professor Marnes, 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 humans.
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: go 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 hot 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.
选项
A、Why species don’t avoid extinction by adapting.
B、Why species become extinct at the rate they do.
C、Why humans aren’t extinct.
D、How many species aren’t extinct.
答案
A
解析
What puzzles the woman about extinction?
转载请注明原文地址:https://tihaiku.com/zcyy/3594740.html
相关试题推荐
[originaltext]AndnowfortheMondayMorningweatherreport.Rightnowthe
[originaltext]AndnowfortheMondayMorningweatherreport.Rightnowthe
[originaltext]Thisweek,wetalkaboutgettinganAmericaneducationonli
[originaltext]Thisweek,wetalkaboutgettinganAmericaneducationonli
[originaltext]RobertFrostwasborninSanFranciscoin1875andwassenta
[originaltext]RobertFrostwasborninSanFranciscoin1875andwassenta
[originaltext]M:Jenny,whatdoyouthinkamillionaireshouldbetike?W:Well
[originaltext]Recentfilms,books,magazinesandnewspapershavereporteda
[originaltext]Recentfilms,books,magazinesandnewspapershavereporteda
[originaltext]TheLibraryofCongress,thelargestlibraryintheUnitedSt
随机试题
Shynessisthecauseofmuchunhappinessforagreatmanypeople.Shypeople
Thebrainsofchildrenareaffectedbyfamilyviolenceinthesamewayasc
HappinessandSadnessA)Happinessandsadnessaretwomo
WhichofthefollowingisNOTneededfortheLostPropertyForm?[br][original
TheenergycrisisinAmericadiscussedheremainlyreferstoashortageoffossi
预制钢筋混凝土构件的接头和拼缝应符合设计要求。。当设计没有具体要求时,承受内力的
居民健康档案信息安全的要求主要包括( )。A.信息保密性 B.信息真实性
(2018年真题)个人理财业务相关的主体包括()。A.个人客户 B.商业
企业以一笔款项购入多项没有单独标价的固定资产时,应按各项固定资产公允价值的比例对
鼻饲肠内营养时最易发生的并发症是( )。A.吸入性肺炎 B.急性胆管炎 C
最新回复
(
0
)