首页
登录
职称英语
There are about 105 males born for every 100 females, but this (36)______ dr
There are about 105 males born for every 100 females, but this (36)______ dr
游客
2024-06-15
27
管理
问题
There are about 105 males born for every 100 females, but this (36)______ 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 (37)______ is being changed. Now, boy babies (38)______ 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 (39)______ almost certain death. Today it makes almost no (40)______. Since much of the variation is due to genes, one more agent of evolution has gone.
There is another way to (41)______ evolutionary suicide: stay alive, but have fewer children. Few people are as (42)______ as in the past. Nowadays the number of births, like the age of death, has become (43)______. Again, (44)____________.
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. (45)____________ .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 remember a 20th century way of life beyond comprehension for its ugliness. (46)____________.
[br]
选项
答案
survive
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3635306.html
相关试题推荐
Thereareabout105malesbornforevery100females,butthis(36)______dr
Thereareabout105malesbornforevery100females,butthis(36)______dr
Thereareabout105malesbornforevery100females,butthis(36)______dr
Thereareabout105malesbornforevery100females,butthis(36)______dr
Thereareabout105malesbornforevery100females,butthis(36)______dr
Thereareabout105malesbornforevery100females,butthis(36)______dr
Thereareabout105malesbornforevery100females,butthis(36)______dr
Thereareabout105malesbornforevery100females,butthis(36)______dr
Thereareabout105malesbornforevery100females,butthis(36)______dr
Thereareabout105malesbornforevery100females,butthis【B1】dropstone
随机试题
Dr.Smith,togetherwithhiswifeandtwosons,_____toarriveontheeveningf
Haveyourfilesprotectedwhenworkingonthecomputer,______youmighthaveth
Choosethecorrectletter,A,BorC.[br]Informationonthetestisfrom[ori
氧化为有电子转移的化学反应中失电子的过程,即氧化数升高的过程。常用的氧化剂不包括
卡波环现认为可能是A.核残余物B.血红蛋白聚集C.色素沉着D.脂蛋白变性E.胞质
术后疼痛对于病人的影响不包括A.肺通气功能增加,二氧化碳排出过多 B.血压升高
医院感染的危险因素不包括A:介入治疗 B:母婴同室 C:滥用抗生素 D:气
某企业在计划年度制造某种包装桶10万个,每个包装桶消耗0.5毫米厚镀锌钢板0.5
下列环境中,不适合微生物生长的是:A.水体 B.空气 C.土壤 D.动物
某办公楼的建筑面积为1500m2,土地面积为1000m2,目前的房地产市场价值为
最新回复
(
0
)