首页
登录
职称英语
There are about 105 males born for every 100 females, but this【B1】drops to ne
There are about 105 males born for every 100 females, but this【B1】drops to ne
游客
2023-09-16
43
管理
问题
There are about 105 males born for every 100 females, but this【B1】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【B2】is being changed. Now, boy babies【B3】almost as well as girls do. Fifty years ago, the chance of a baby(particularly a boy baby)surviving depended on its weight. A kilogram too light or too heavy【B4】almost certain death. Today it makes almost no【B5】. Since much of the variation is due to genes, one more agent of evolution has gone.
There is another way to【B6】evolutionary suicide: stay alive, but have fewer children. Few people are as【B7】as in the past. Nowadays the number of births, like the age of death, has become【B8】.Again,【B9】.
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.【B10】. 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 re- member a 20th century way of life beyond comprehension for its ugliness.【B11】.
选项
答案
ratio
解析
this 表明所填词应是对105males born for every 100 females的归纳概括,其表示的是婴儿出生时的性别比例,故填入ratio“比;比率”。
转载请注明原文地址:https://tihaiku.com/zcyy/3017747.html
相关试题推荐
随机试题
[originaltext]InterviewwithNickUlaruAboutleadershipandteambuil
SurvivalofEnglishLanguageI.Introduction—English
Theideatoremodelyourbathroomcancomeasanideatoaugmentyourhouse
Ifyou______myadvice,you______yourfailurenow.You______yourvictory.A、took;
HardlyhadIheardthenews______Ibegantocry.A、whenB、thanC、asD、andA本题考查
在CPU中,()的主要功能是在控制器的控制下完成各种算术运算和逻辑运算。(
下列选项中,不属于我国推进衰退行业转型和转移政策的是()。A.财政补贴 B.
痢疾患者的大便性状为A.脓血便B.鲜血便C.胨状便D.米泔样便E.柏油样便
甲公司在其五年发展战略中确立了以下目标:(1)降低产品成本,使现有产品单位成本在
在施工合同解除后发生的价款纠纷,以下处理原则正确的是( )。A.因承包人原因解除
最新回复
(
0
)