首页
登录
职称英语
[originaltext]W: [5]Professor Smith, I wonder if you can fill me in on your lec
[originaltext]W: [5]Professor Smith, I wonder if you can fill me in on your lec
游客
2023-08-17
19
管理
问题
W: [5]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: [6]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, [7]but now, of course, we survive by ingenuity!
W: So we may never become extinct.
M: [8]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、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://www.tihaiku.com/zcyy/2932763.html
相关试题推荐
[originaltext]Goodmorning.Ifeelhonoredtogiveyouaspeechtoday.Doy
[originaltext]Goodmorning,everyone.First,I’dliketoaskyouaquestion
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreathon
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreathon
[originaltext]MedicalexpertssaymostAmericansdonotgetenoughsleep.T
[originaltext]MedicalexpertssaymostAmericansdonotgetenoughsleep.T
[originaltext]TheWorldHealthOrganizationsays57nationsinSouthernAfr
[originaltext]Morning,everyone.(23)WiththeInternetrevolutionusheringi
[originaltext]Morning,everyone.(23)WiththeInternetrevolutionusheringi
[originaltext]Hello,everyone.Hereisaquestionforyou.Thecustomeris
随机试题
FromthetopofTempleIV,densejunglecanopy(遮篷)spreadstothehorizonin
[originaltext]A:Youknow,whenitcomestotheconnectionsyoumakeinnetwork
Shehasappliedtotheuniversity______(延长她对牛津大学的访问时间).foranextendedvisitt
在Windows中,需要查找近一个月内建立的所有,可以采用()。A.按名称查找
()是我们立党立国的根本指导思想A、毛泽东思想 B、邓小平理论 C、科学发展
《风险揭示书》内容与格式要求由()制定。A.中国证券业协会 B.中国证监会
王先生现有资产50万元,投资一项预期年收益5%的投资项目,复利计息,两年后王先生
下列心理测定方法中哪一种属筛查性测验?( )A.绘人测验 B.贝利婴幼儿发育
保险公司在资金运用面临的企业风险不包括()。A.营业风险 B.财务风险 C
下列会计凭证中,属于商业银行会计基本凭证的有()。A.进账单 B.贷款借据
最新回复
(
0
)