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
30
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] 【B8】
选项
答案
average
解析
本空也应填入一形容词与become构成系表结构。average指“平均的”,本句是说目前出生率和死亡率已经接近了。
转载请注明原文地址:https://tihaiku.com/zcyy/3000566.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】______dro
Thereareabout105malesbornforevery100females,butthis【B1】______dro
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
随机试题
[originaltext]MorepeoplearetryingtolearnEnglishthananyotherlangua
A.几何可变体系 B.几何不变体系,无多余约束 C.几何不变体系,有1个多余
35岁病人,因阴道分泌物十分多,有异味2个月来诊妇检发现宫颈失去常态,易出血,此
(共用题干)患者女,47岁。主诉外阴瘙痒,外阴及阴道灼痛,白带增多呈豆腐渣样,有
《建筑内部装修设计防火规范》规定,当胶合板表面涂覆()饰面型防火涂料时,可做为
为检验应急预案的可行性、应急准备的充分性、应急机制的协调性及相关人员的应急处置能
职业道德的主要内容包括爱岗敬业、诚实守信、办事公道、服务群众、奉献社会等。职业道
A.蜘蛛痣 B.脾大 C.黄疸 D.下肢水肿 E.肝大肝硬化低蛋白血症可
女性,30岁,4个月来常感午后低热、纳差,体重下降5kg。胸片示左上肺云雾状淡薄
患者女,50岁。患有慢性阻塞性肺疾病(COPD)支气管炎型,近1周受凉后咳嗽、气
最新回复
(
0
)