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
Being a man has always been dangerous. There are about 105 males born for every 100 females, but this ratio drops to near balanc
Being a man has always been dangerous. There are about 105 males born for every 100 females, but this ratio drops to near balanc
admin
2022-05-20
61
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 have 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.
What does "fertile" in the second paragraph mean?
选项
A、Female.
B、Able to produce much.
C、Religious celebration.
D、Quick.
答案
B
解析
根据上下文“Except in some religious communities,very few women have 15 children.”除了一些宗教团体中,很少女人有15个孩子。所以可以推断上文中的fertile意思是能生育的,所以B项与此意思相符,故选B。
转载请注明原文地址:https://kaotiyun.com/show/wtCd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Sailorsandfishermeninparticular,havealwaysbeenextremelysuperstitious.Thisishardlysurprisingwhenoneconsidersthe
WhichofthefollowingisNOTmentionedintheconversationtoflavorthenewproductwith?
ThefirstnavigationallightsintheNewWorldwereprobablylanternshungatharboren-trances.Thefirstlighthousewasputu
Accordingtothepassage,whyhaven’tthescientistsfindacureforthecommoncold?
Floods,stormsandothernaturaleventskillthousandsofpeopleeveryyear.Sodoesextremeheat.Expertssayheatmaybenatur
Directions:Studythefollowingpicturecarefullyandwriteanessayonthetopic:Students’life.Writeyouressayaccordingto
Itisanastonishingfactthattherearelawsofnature,rulesthatsummarizeconveniently-【21】qualitativelybutquantitatively
Manydoctorssuspectthattheremaybesomerelationshipbetweenemotionsandillness.However,theycannotfindaproof.Iti
61)Inafamilywheretherolesofmenandwomenarenotsharplyseparatedandwheremanyhouseholdtasksaresharedtoagreater
Awhitekidsellsabagofcocaineathissuburbanhighschool.ALatinokiddoesthesameinhisinner-cityneighborhood.Both
随机试题
胶片对比度的叙述,错误的是
患者,女性,48岁,因长期疲乏无力、头晕、眼花而就诊。血常规显示:血红蛋白80g/L,红细胞3.28×1012/L,入院后深入检查发现,患者除血清铁、铁蛋白,骨髓含铁血黄素、铁粒幼细胞均低于正常外,总铁结合力高于正常。护士向患者宣教,要想彻底治愈本病,
依照建设工程施工劳务分包合同示范文本规定,( )属于工程分包人应完成的工作。
甲公司是专营进料加工的外商投资企业,该公司设在武汉,海关经营企业分类为B类。2007年6月该投资企业委托南京某进出口公司与韩国某企业签订一批原材料的进口合同,合同金额为800万美元,该批货物属于允许加工类商品。合同中已规定,40%进口料件加工成品内销,60
下列事件的最佳逻辑排列顺序是()。①获得效益②确定方案③发现问题④草拟方案⑤实施方案
下列选项中的哪种情形不是《行政许可法》规定的根据利害关系人的请求或者依据职权,可以撤销行政许可的情形?()
比较固执,爱钻牛角尖,这是思维缺乏()的表现。
西方传教士的翻译活动为翻译史的研究在深度上有所突破提供了新视野。________首创中西结合翻译介绍西方科学文献的历史,首次将“四书”外译,开创中国典籍外译的先河。
在Word的编辑状态,若选择了表格中的一行,执行了表格菜单中的“删除列”命令,则(1);若要对当前正在编辑的文件加“打开权限密码”,则应该选择(2),然后按相关提示操作即可。
设有商品表(商品号,商品名,单价)和销售表(销售单据号,商品号,销售时间,销售数量,销售单价)。其中,商品号代表一类商品,商品号、单价、销售数量和销售单价均为整型。请编写查询某年某商品的销售总毛利的存储过程,毛利=销售数量×(销售单价一单价)。要求商品
最新回复
(
0
)