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
考研
Being a man has always been dangerous. There are about 105 males born for every 100 females , but this ratio drops to near balan
Being a man has always been dangerous. There are about 105 males born for every 100 females , but this ratio drops to near balan
admin
2018-03-01
72
问题
Being a man has always been dangerous. There are about 105 males born for every 100 females , but this ratio drops to near balance at the age of maturity, and among 70-year-olds there are twice as many women as men. But the great universal of male mortality is being changed. Now, boy babies survive almost as well as girls do. This means that, for the first time, there will be an excess of boys in those crucial years when they are searching for a mate. More important, another chance for natural selection has been removed. Fifty years ago, the chance of a baby (particularly a boy baby) surviving depended on its weight. A kilogram too light or too heavy meant almost certain death. Today it makes almost no difference. Since much of the variation is due to genes, one more agent of evolution has gone.
There is another way to commit evolutionary suicide: stay alive, but have fewer children. Few people are as
fertile
as in the past. Except in some religious communities, very few women has 15 children. Nowadays the number of births, like the age of death, has become average. Most of us have roughly the same number of offspring. Again, differences between people and the opportunity for natural selection to take advantage of it have diminished. India shows what is happening. The country offers wealth for a few in the great cities and poverty for the remaining tribal peoples. The grand mediocrity of today—everyone being the same in survival and number of offspring—means that natural selection has lost 80% of its power in upper-middle-class India compared to the tribes.
For us, this means that evolution is over; the biological Utopia has arrived. Strangely, it has involved little physical change. No other species fills so many places in nature. But in the past 100,000 years—even the past 100 years—our lives have been transformed but our bodies have not. We did not evolve, because machines and society did it for us. Darwin had a phrase to describe those ignorant of evolution; they "look at an organic being as a savage looks at a ship, as at something wholly beyond his comprehension." No doubt we will remember a 20th century way of life beyond comprehension for its ugliness. But however amazed our descendants may be at how far from Utopia we were, they will look just like us.
Which of the following is not true according to the first paragraph?
选项
A、Weight used to be a significant factor toward a boy baby’s life.
B、Boy babies’ survival rate is as high as girl babies’.
C、Today it makes almost no difference for the boy’s survival condition.
D、Men used to have a lower survival rate.
答案
C
解析
选项C对应第一段倒数第二句,这一句话承接前一句,意思是:如今体重几乎没有太大影响。并没有讲今天男孩的生存状况有任何不同,因此选项C曲解了文意。选项A对应的是第一段的倒数第四句,文中提到:50年前,婴儿(尤其是男婴)存活的机会取决于他的体重,过轻或过重几乎意味着会早早夭折。因此,可以看到,“体重曾经是男孩子存活与否的重要因素”。选项B对应第一段的第四句,是文中意思的同义改写:现在男婴存活率同女婴存活率几乎持平。因此,这个题目的正确答案是C。
转载请注明原文地址:https://kaotiyun.com/show/OABZ777K
0
考研英语一
相关试题推荐
Weoftenattributekeycharacteristicstooneofourparents:"Hegetshisathleticismfromhisfather.""Herquicknesstoange
IsGooglecreatingthenextgenerationofofficeblowhards?AcleverpsychologicalstudybyYaleUniversityresearchers【B1】_____
America’seconomyiscertainlyinatenderstate.Butthepessimismofthepresidentialslanging-matchmissessomethingvital.L
America’sgreatlabourmarketslumpcontinuestocastitspallovertheeconomy,leavingonelonelygroupinparticularshrouded
Parentsofchildrenwhohappilyeatwhat’sputinfrontofthemmightassumetheirkidsarewellnourished.Buttwonewstudies
Itwasjustafootnotecomparedwiththemoreinfectiousdisasterthatkilledmillionsmorepeoplein1918,butthe1957influen
Women’sfertilityisdeterminedinlargepartatbirth.Theyarebornwiththeirtotalnumberofreproductivecells,whichnorma
Morethananyotherindustry,America’smulti-billion-dollarentertainmentbusinessiscaughtinthecrossfireofthecountry’s
Thefoodsupplywillnotincreasenearlyenoughtomatchthis,whichmeansthatweareheadingintoacrisisinthematterofpr
Whereveryouwork,youmustalwaysservethepeoplewhole-heartedly.
随机试题
不属于原发性肝细胞癌病理分类的是
淋巴瘤原发于膈上,照射部位不包括
计算机的存储器的每个单元容量通常都是()。
()是银行从事经营活动必须注入的资金,可以用来吸收银行的经营亏损,缓冲意外损失,保护银行的正常经营,为银行的注册、组织营业以及存款进入前的经营提供启动资金等。
某生物制药公司年销售净额280万元,息税前利润80万元,固定成本为32万元,变动成本总额为168万元,资产总额为200万元,负债资产比率为40%,综合债务利率为12%,公司的所得税税率为33%。预计3年后,公司的资产总额达到1000万元,负债率会提高到60
下列各项中,属于单方法律行为的有()。
东阳大智禅寺内的释迦牟尼像高达()米,为全国高度第一的室内佛像。
无论当下的生活多么衣食无忧,中国人还是爱假想将来可能遇到的__________,即使这些真正发生的几率接近于零。这只能从中国人___________的传统心理方面进行解释。依次填入划横线部分最恰当的一项是()。
复活节岛是位于太平洋上的一座孤岛。在报道中,复活节岛文明的衰落常作为一个警世故事,讲述人类肆意采伐棕榈树林,致使肥沃的土壤流失,最终导致岛中食物短缺,文明自此衰落。然而近日有专家提出,复活节岛文明的衰落与树木砍伐并无必然联系。以下哪项如果为真,最能支持上
若有以下程序#includeint*f(int*s,int*t){int*k;if(*s
最新回复
(
0
)