首页
登录
职称英语
[originaltext]W: Professor Marnes, I wonder if you can fill me in on your lectu
[originaltext]W: Professor Marnes, I wonder if you can fill me in on your lectu
游客
2023-08-24
45
管理
问题
W: Professor Marnes, 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 vital part 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 might have died off years ago if not for humans.
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 killers who live on us for food, but now, of course, we survive by cleverness.
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.
9. Why did the woman go to see the professor?
10. What puzzles the woman about extinction?
11. What does the man say about humans’ successful survival?
选项
A、It was by continuous exploitation of the environment.
B、It was largely by chance.
C、It was because of houseflies.
D、It was by chance initially and by cleverness now.
答案
D
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2953898.html
相关试题推荐
[originaltext]Farmersusuallyuseploughstopreparetheirfieldsforplant
[originaltext]EdgarAllenPoe,anAmericanwriter,wasbornin1809.Hispa
[originaltext]EdgarAllenPoe,anAmericanwriter,wasbornin1809.Hispa
[originaltext]EdgarAllenPoe,anAmericanwriter,wasbornin1809.Hispa
[originaltext]M:DidyouhearabouttheaircrashthatoccurredinSouthAmeric
[originaltext]W:Hello,Patrick.Isthatyou?M:Yeah,Jane.WhatcanIdofor
[originaltext]W:Hello,Patrick.Isthatyou?M:Yeah,Jane.WhatcanIdofor
[originaltext]W:Hello,Patrick.Isthatyou?M:Yeah,Jane.WhatcanIdofor
[originaltext]M:Ineedtofindadentist.YousaidyouknowDr.Smithwell.Do
[originaltext]M:Ineedtofindadentist.YousaidyouknowDr.Smithwell.Do
随机试题
Ifyoufeeloverwhelmedbyyourcollegeexperiences,youarenotalone—many
Beingagoodparentis,ofcourse,whatev
以太网交换机进行转发决策时使用的PDU地址是()。A.目的物理地址 B.源物
采用同类钢材制作的具有相同截面面积、相同截面高度(h)和腹板厚度,翼缘宽度不等的
在建筑工程的不同阶段,对应有不同深度的BIM,LOD300通常用于()阶段。A.
A.清宫术 B.取适量内膜活检 C.测基础体温 D.经行24~48h刮宫
肾性多尿的特点是A、夜尿量减少B、夜尿量增多C、昼夜尿量比<1、2D、昼夜
下列有关流变学的叙述错误的是A:流变学主要是研究物质的变形和运动的科学 B:牛
实施晋升策略应采取的措施有()A.管理者应该强调企业内部晋升政策 B.鼓励直
投资者预期某债券价格将要下跌,先定立期货合同按现有价格卖出,等该债券价格下跌后再
最新回复
(
0
)