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
2023-09-10
39
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] 【B7】
选项
答案
fertile
解析
空中应填一形容词作表语。前句中的have fewer children表明应该很少再有人和以前一样生很多孩子。fertile在这里意为“多产的,繁殖力强的”。as…as结构决定须填形容词原形。
转载请注明原文地址:https://tihaiku.com/zcyy/3000565.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】______dro
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
随机试题
PlayingamajorroleintheeconomiclifeoftheUnitedStates,______.A、womenc
肥达试验是一种A.试管凝集试验 B.玻片凝集试验 C.正向间接凝集试验 D
用于皮下埋置的避孕剂是A.孕三烯酮 B.雌二醇 C.甲羟孕酮 D.左炔诺酮
以数据库为基础,可以把业务做成应用软件包,包内的不同应用程序之间可以互相调用或共
血清胆红素测定的标本必须避免阳光直接照射,以免结果降低。其原因是A.胆红素氧化成
全胃肠外营养支持患者可能发生的最严重的代谢并发症是A:高钾血症 B:低钾血症
两个偏振片叠在一起,使它们的偏振化方向之间的夹角为60°,设两者对光无吸收,光强
对党在社会主义初级阶段的基本路线作出明确概括的是 A.党的十二大B.党
下列有关德国法和法国法的表述哪一项是正确的? A.德国封建时代最著名的习惯法
下列关于沥青混合料压实的有关说法错误的是()。A.压路机采用2~3台双轮双振压路
最新回复
(
0
)