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
2024-04-10
21
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://tihaiku.com/zcyy/3549023.html
相关试题推荐
MarieCuriewasthefirstfemaleprofessoratSevres,acollegeforgirlswh
MarieCuriewasthefirstfemaleprofessoratSevres,acollegeforgirlswh
MarieCuriewasthefirstfemaleprofessoratSevres,acollegeforgirlswh
MarieCuriewasthefirstfemaleprofessoratSevres,acollegeforgirlswh
[originaltext]Ifyou’recarefulenough,you’llfindthatitiscommonnowad
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]Peter:(19)ThelawontaxisisveryinterestingandIknowinLon
[originaltext]Peter:(19)ThelawontaxisisveryinterestingandIknowinLon
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
随机试题
当每台水泵单独从水池吸水有困难时,可采用单独从吸水总管上自灌吸水。下列关于吸水总
在我国,城市郊区的土地归( )所有。A.国家 B.农村集体 C.单位
与相应动脉对比,静脉特点描述正确的是A、弹性大 B、管壁厚 C、管腔大 D
A.苯海拉明 B.氯雷他定 C.西替利嗪 D.雷尼替丁 E.酮替芬治疗晕
依据《义务教育美术课程标准(2011年版)》,简答“设计·应用”学习领域第四学
事前控制、事中控制和事后控制属于( )。A、三全控制原理 B、PDCA循环
下列选项中,不属于我国五大淡水湖的是()。A.鄱阳湖 B.青海湖 C
医生:医院:医疗A.勇士:勇敢:斗士 B.战场:战士:革命 C.士兵:军营:
在装有避雷针、避雷线的构架上()架设低压线、通信线和广播线(符合安装要求和照明
关于建设工程安全生产管理预警级别的说法,正确的是()。A.Ⅰ级预警用橙色表示
最新回复
(
0
)