首页
登录
职称英语
[originaltext]W: Professor Smith, I wonder if you can fill me in on your lectur
[originaltext]W: Professor Smith, I wonder if you can fill me in on your lectur
游客
2024-04-26
32
管理
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 13 to 15 are based on the conversation you have just heard.
13. Why does the woman go to see the professor?
14. What puzzles the woman about extinction?
15. Why is the professor not so sure humans will never become extinct?
选项
A、Why species don’t avoid extinction by adapting.
B、Why humans won’t become extinct in the future.
C、Why species become extinct at the rate they do.
D、How many species aren’t extinct at present
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3572170.html
相关试题推荐
[originaltext]W:Iamreallydiscouragedbythelackofprogressmystaffisma
[originaltext]W:Iamreallydiscouragedbythelackofprogressmystaffisma
[originaltext]W:Iamreallydiscouragedbythelackofprogressmystaffisma
[originaltext]W:Iamreallydiscouragedbythelackofprogressmystaffisma
[originaltext]W:Iamreallydiscouragedbythelackofprogressmystaffisma
[originaltext]AlthoughHenryFord’snameiscloselyassociatedwiththecon
[originaltext]AlthoughHenryFord’snameiscloselyassociatedwiththecon
[originaltext]Peoplewhoarehitbylightningandsurviveoftenhavelong-t
[originaltext]Peoplewhoarehitbylightningandsurviveoftenhavelong-t
[originaltext]Untilthe20thcentury,mostpaintingswererepresentational.
随机试题
Insuchachanging,complexsocietyformerlysimplesolutionstoinformatio
Accordingtosociologists,thereareseveraldifferentwaysinwhichaperso
WiththerapidspreadoftheInternetevery-whereintheworld,the【C1】__
属于有母线接线的是()。A.桥型接线 B.角型接线 C.二分之
"改变服药时间"可避免或减轻用药后轻微的不良反应,例如A.口干 B.便秘 C
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
货物质量管理体系中,质量鉴定工作程序包括()。A.申请和受理 B.签订产品质
与普通食品相比,以下不属于绿色食品的显著特点的是()。A.强调食品没有任何添加剂
把目标消费者的住房需求分为生存型、发展型和享受型,是依据消费者的()进行住房市场
(2018年真题)OECD于2015年10月发布税基侵蚀和利润转移项目全部15项
最新回复
(
0
)