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
34
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
That’sthereason_________Anncouldnotdoherpartofthejob.A、thatB、ofC、bec
ModelsforArgumentsI.ThreemodelsforargumentsA.the
TheCarnegieFoundationreportsaysthatmanycollegeshavetriedtobe"all
TheFrenchdivisionofMcDonald’shasrunadvertisementsthatincludedasur
批发方式是批发商组织销售的具体方法和形式,包括交货方式和()。
以下哪种物质不是职业性膀胱癌的主要致癌物A.2-萘胺 B.β萘胺 C.金胺
具有“殷、青铜冶炼、甲骨文”这些典型特征的朝代是()。A.夏 B.商 C.
夏普比率数值越小,表示单位总风险下超额收益率( )。A.越高 B.越低 C
甲公司生产“清逸”牌洋甘菊精油,该精油主要提取自洋甘菊,该公司生产的该种精油外瓶
(2015年真题)关于施工过程水污染预防措施的说法,正确的有( )。 A.禁
最新回复
(
0
)