首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、He thinks flies will take over the earth. B、He thinks human will die off quite soon, C、He thinks mass disease could be the nex
A、He thinks flies will take over the earth. B、He thinks human will die off quite soon, C、He thinks mass disease could be the nex
admin
2009-04-23
52
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 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 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 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.
选项
A、He thinks flies will take over the earth.
B、He thinks human will die off quite soon,
C、He thinks mass disease could be the next path to extinction.
D、He sees human beings as destructive.
答案
C
解析
What is inferred by the professor at the end of the lecture?
转载请注明原文地址:https://kaotiyun.com/show/TNZK777K
0
大学英语六级
相关试题推荐
ASalesManagerWantedHunanMilkGroupisafamousmanufacturerandmarketeroflacticaicdmilkdrink(乳酸奶饮料)withitsheadq
Scientistsfindthathard-workingpeoplelivemuchlongerthanaveragemenandwomen.Careerwomenarehealthierthanhousewives
A、Doctor.B、Teacher.C、Scientist.D、Businessman.D女士问男士将来打算做什么,医生还是老师,男士均予以否认,并表示他想帮助父亲打点生意。由此可见,男士将来可能成为商人。
A、Hostandguest.B、Doctorandpatient.C、Managerandofficeworker.D、Travelagentandcustomer.C女士问男士她下个月初休假有无可能,男士问女士是否填了请假条
IntheUnitedStatesandCanada,aprom,shortforpromenade,isaformaldance,orgettingtogetherofhighschoolstudents.It
Hospitaldoctorsdon’tgooutveryoftenastheirworktakes______theirtime.
MostAmericansretireaftertheageofsixty.Theusualageofretirementis65,althoughsomepeopleretireat55oryounger.O
A—multimediamessageserviceJ—fixeddialB—subscriberidentitymoduleK—automaticredialC—voicepromptL—two-waychargin
Consumers______complaintsarehandledwellbyacompanywillbecomeloyalcustomers.
A、Becausesheisafraidoflivingbyherselfandsheisshortofmoney.B、Becausesheisafraidofseeingadoctorbyherself.C
随机试题
治疗失眠症的总体目标是()。
一笔会计分录主要包括三个要素即会计科目、记账符号和金额。()
下列业务中属于支付性筹资动机的有()。
下列因素中,认定驰名商标应当考虑的因素有()。
一般而言,基于信息化绩效考评系统的构成不包括()。
A、 B、 C、 D、 A此题考查图形的重心位置。各图形的重心依次在下、下、中、上、(上),选项中只有A项符合。
设z=f(x,y)是由e2yz+x+y2+z=确定的函数,则=________.
设X~N(μ,σ2),且P{X≤σ}>P{X>σ},则
下表为一路由器R的路由表。如果该路由器接收到一个源IP地址为192.168.10.2、目的IP地址为192.168.2.10的IP数据报,那么它将把此IP数据报投递到()。
Ajobinterviewisyourchanceto(31)anemployerwhatheorshewillgetifyou’re(32).Thatiswhyitis(33)tobewellpre
最新回复
(
0
)