首页
登录
职称英语
There are about 105 males born for every 100 females, but this【B1】______ dro
There are about 105 males born for every 100 females, but this【B1】______ dro
游客
2024-06-02
1
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】______ . [br] 【B1】
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/3616825.html
相关试题推荐
Thereareabout105malesbornforevery100females,butthis【B1】______dro
Thereareabout105malesbornforevery100females,butthis【B1】______dro
Thereareabout105malesbornforevery100females,butthis【B1】______dro
Thereareabout105malesbornforevery100females,butthis【B1】______dro
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
随机试题
DearMr.Black,Weareamid-sizedaccountingfirm.Ourstaffmembersarenot
Mostpeopledon’twakeupinthemorning,combtheirhair,andwalkoutthe
E1线路是一种以时分多路复用技术为基础的传输技术,其有效数据速率(扣除开销后的数
在下述物理因素中对人体直接作用深度最大的是A.长波紫外线 B.短波紫外线 C
在用桥梁出现下列()情况应进行承载能力检测评定。A.技术状况为三、四、五类
A.黄柏 B.玄参 C.知母 D.牡丹皮 E.地骨皮具有退虚热、燥湿功效
移情是儿童__________产生的基础。
如下现象属于教育范畴的是A.爸爸针对小明懦弱的个性设法训练小明如何以牙还牙报复欺
属于酸性氨基酸的是 A.GIuB.LysC.ProD.Trp
共用题干 李某购买一套价格为100万元的住房,法定最低首付款比例为30%,住房
最新回复
(
0
)