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、Because every species become extinct. B、Because human beings are powerful enough to kill other species. C、Because of over-popu
A、Because every species become extinct. B、Because human beings are powerful enough to kill other species. C、Because of over-popu
admin
2013-03-09
66
问题
W: Professor Manes, 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、Because every species become extinct.
B、Because human beings are powerful enough to kill other species.
C、Because of over-population.
D、Because human being is still a young species though it is exploiting the environment.
答案
D
解析
推理判断题。题目问为什么教授无法确定人类是否永远不会灭绝。根据对话中男士所说的 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可知,教授认为人类目前对环境的持续开发利用可能会导致人类的灭绝,但由于人类还是相对年轻的物
转载请注明原文地址:https://kaotiyun.com/show/xgI7777K
0
大学英语六级
相关试题推荐
A、Cameronshouldn’thavewastedmoneyontheCDs.B、CameronshouldhaveboughtthesamemovieCDsasthewoman.C、Thewomanhas
A、Theyneedn’tworryabouttheirworkingenvironment.B、Work-relatedinjuriesareincreasingrecently.C、Theyshouldpaymoreat
LearningFromInformalCities,BuildingforCommunitiesWhatiftherewereabetterwayofliving?Awaythatwasmoreenvir
Fiveminutesearlier,______(我们就能赶上最后一趟火车了)
Panicattackvictimsshowthefollowingsymptoms:theyoftenbecomeeasilyfrightenedorfeeluneasyinsituationswherepeoplen
EachyearUniversum,aSwedishconsultingfirm,asksAmericanMBAstudentswheretheywouldmostliketowork.The2007surveys
A、Becausethenamereferstostreetwomen.B、Becausethenameisoutofdate.C、Becausewomenhavesomebetternames.D、Because
Childrenarelosingtheabilitytoplayproperlybecausetheyarebeinggiventoomanytoysandgames,accordingtoanewresear
Thereareseveraltheoriesastowhythedinosaursbecome______.
A、Bettywillprobablyhavetheanswer.B、Bettyistheonewhomadetheerror.C、Theyshouldn’ttellBettyaboutthemistake.D、T
随机试题
关于质量管理体系的ISO9000族国际标准发布于______。
行宫见月伤心色,夜雨闻铃肠断声。行宫:
急性缺氧时机体呼吸、循环有哪些代偿反应?
手术切除恶性肿瘤的正确做法是
刘某、赵某、黄某、张某四人合伙成立一家金属冶炼公司,该公司董事长由最大的股东刘某担任,但刘某因生病长期休养,并不直接参与公司生产经营活动;公司总经理由赵某担任,全面负责生产经营活动;黄某担任冶炼车间主任,负责车间日常生产管理;张某担任公司工会主席。根据《安
不属于总监理工程师基本职责的有()。
商品房符合()条件可以预售。
如图,二面角α—l—β的大小是60°,线段ABα,B∈l,AB与l所成的角为30°,则AB与平面β所成的角的正弦值是__________.
某出租车司机因为违章被某公安机关交警部门吊销了驾驶执照。该司机认为处罚过重,并且给其造成了经济损失,其可以依法()。
ConversationalSkills1.Skilltoaskquestionsa)Beawareofthehumannature:readinesstoanswerothers’questionsr
最新回复
(
0
)