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
17
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
Lowspeedbicyclecrashescanbadlyinjure—orevenkill—childreniftheyfal
ArecentcaseinAustraliashowshoweasilyfearcanfrustrateaninformer’s
关于短路故障时的负序电流,下述说法中正确的是()。A.任何短路情况下,短路电流
公路客运站总平面布置应处理好车流、客流、行包流线、停车区域等内容,下列哪种说法是
抗利尿激素的主要作用是A.提高远曲小管和集合管对水的通透性 B.增强髓袢升支粗
戊型肝炎病毒的主要传播途径是A.粪—口传播 B.血液传播 C.虫媒传播
选择电动机时应考虑下列哪些条件?()A.电动机的全部电气和机械参数 B.电动
属于环境噪声现状评价的内容有( )。A.现状噪声源分析 B.声环境质量现状评价
男,36岁。因体表烧伤入院,估计深Ⅱ度面积为15%,Ⅲ度面积为25%。在烧伤创面
某企业是机械加工企业,根据《生产经营单位安全培训规定》,关于该企业开展从业人员安
最新回复
(
0
)