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
2023-09-16
62
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
mortality
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3019039.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
有位哲人说:“真正的财富,是健康的身体、简单的生活和心情上的海阔天空。”在诸多示顺与不平时,此话使人蓦然觉醒:原来我们对生活的牢骚满腹,首先是由于我们自
TheNewMathonCampusSexualImbalanceinCollegesAftermidni
Mercifully,IwasabletocompleteallIhadtodowithinafewdays.Theunderl
简述结肠造口病人结肠灌洗的方法及注意事项。
下列施工现场作业人员的行为,错误的是()。A.焊工与油漆工在同时、同部位上下交叉
简支梁受力如图所示,梁的正确挠曲线是图示四条曲线中的( ) A.图(A)
针入度试验通常在()温度测针入度,该温度大约为热拌沥青混凝土路面的平均服务
搞好社区健康教育与健康促进工作的关键是A.加强社区领导 B.建立组织网络 C
男,1岁。3天来发热伴呕吐,抽搐2次。体检:体温39℃,精神萎靡,脑膜刺激征阳性
男,65岁。夜间阵发性呼吸困难1周,坐起症状可减轻,发作持续约30?60分钟.
最新回复
(
0
)