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
23
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
OnAugust18thUSNews&WorldReportreleasedits2007rankingsofAmerica
[originaltext]Currentstudiesshowthatwhatgoesonlabelsisanimportant
Whatissuburbanization?Ifby"suburb"ismeantanurban【S1】______thatgrows
[originaltext]Amassiveevacuationoftouristsinoneoftheworld’slargest
Forthispart,youareallowed30minutestowriteashortessayonthetopicTh
在关系数据模型中,实体与实体之间的联系统一用二维表表示。()
B每行、每列来看,前两个图形的封闭区域数之和等于第三个图形的封闭区域数。应选择有7个封闭区域的图形,B符合。
在电子商务的运作过程中,电子商务网站推广属于( )阶段的工作。A.制定电子商务战
汗法是针对外邪袭表、邪在肺卫病机拟定的治法。滋阴解表法适用的临床症状是A.恶寒发
可判断有机磷杀虫药中毒的严重程度并指导治疗最有意义的是( )。A.血胆碱酯酶活
最新回复
(
0
)