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
2023-08-15
28
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 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://tihaiku.com/zcyy/2927603.html
相关试题推荐
[originaltext]W:Whenwasthelasttimeyouwentforawalkinyourlocalpark?
[originaltext]W:Whenwasthelasttimeyouwentforawalkinyourlocalpark?
[originaltext]W:Whenwasthelasttimeyouwentforawalkinyourlocalpark?
[originaltext]W:HelloLadiesandGentlemen,itisagreatpleasuretohaveSco
[originaltext]W:HelloLadiesandGentlemen,itisagreatpleasuretohaveSco
[originaltext]E-booksarebringingaboutaprofoundrevolutioninthewayb
[originaltext]AmericanmagicianDavidBlaineistobesuspendedinaglass
[originaltext]AmericanmagicianDavidBlaineistobesuspendedinaglass
[originaltext]W:Hello.Isthistheregistrationoffice?M:Yes.ThisisHerber
[originaltext]W:Hello.Isthistheregistrationoffice?M:Yes.ThisisHerber
随机试题
Anewpartnerpushesouttwoclosefriendsonaverage,leavingloverswitha
Thehumangrowthhormone,madebythepituitarygland,issecretedduringsleep
Huntingforajobcanbestressful,butthere’snoreasontohurtyourchanc
在对手动火灾报警按钮功能测试时,按下手动火灾报警按钮的启动零件,()报警确认灯
与完全竞争市场和完全垄断市场不同,垄断竞争市场( )。A、基于理论假设 B、现
A.25℃有动力,37℃无动力B.菌体一端或两端膨大,有异染颗粒C.革兰染色阴性
原发性肾病综合征的主要病因是A.遗传因素 B.过敏因素 C.免疫因素 D.
刘某因脑出血行急诊手术,在抢救过程中,执行口头医嘱应A:立即执行 B:护士复述
当采用匀速进展横道图比较法比较工作实际进度与计划进度时,如果表示工作实际进度的横
工程项目施工风险管理过程中,风险识别工作包括()。A.收集与施工风险有关的信息
最新回复
(
0
)