首页
登录
职称英语
There are about 105 males born for every 100 females, but this【B1】______ dr
There are about 105 males born for every 100 females, but this【B1】______ dr
游客
2024-06-02
34
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/3615737.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
ThroughWhitman’slines,wecansee______.[br]WhichofthefollowingaboutWa
TheMuseumofContemporary(当代的)Art(MOCA.hasstartedanewseriesofprogr
通风与空调系统综合效能试验测定与调整的项目,应根据()确定。A.生产试运行的
施工中常用于基础划线的仪器是()。A、经纬仪 B、水准仪 C、全站仪 D、
WHO推荐用显微镜直接进行精子活动力分级中,规定b级精子活力指精子呈( )。A
低血钾的阈值(mmol/L)是A.2.5 B.3.5 C.4.5 D.5.
Thechangeinthatvillagewasmiraculou
《中华人民共和国银行业监督管理法》赋予银监会及其派出机构( )的权力,这些监督
(2017年真题)根据《期货公司风险监管指标管理办法》的规定,期货公司应当按照企
胎盘娩出前,一阵阵大量暗红色血液流出,伴有血块,则以上哪种情况最有可能() A
最新回复
(
0
)