首页
登录
职称英语
[originaltext] All warm-blooded animals are very helpless at first. Young bi
[originaltext] All warm-blooded animals are very helpless at first. Young bi
游客
2023-07-29
33
管理
问题
All warm-blooded animals are very helpless at first. Young birds and young bats must be taught to fly. Thousands of young seals drown every year. They never learn to swim "naturally." The mother has to take them out under her flipper and show them how. Birds sing without instruction; however, they do not sing well unless they are able to hear older members of their species. Older harvest mice build better nests than beginners. Frank Buck says that the young elephant does not seem to know at first what his trunk is for. It gets in his way and seems more of a hindrance than a help until his parents show him what to do with it. Insects, seem to start life equipped with all necessary reflexes, but they seem to improve their talents with practice. Young spiders, for example, begin by making quite primitive little webs. They attain perfection in their art only after much time. Older spiders, if deprived of their spinnerets, will take to hunting.
选项
A、They know what to do because of instinct.
B、They know how to fly naturally.
C、They often reject their parents.
D、They learn behavior from their parents or other animals.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2878084.html
相关试题推荐
[originaltext]Inaway,allofusareonaspaceship,theplanetEarth.We
[originaltext]Inaway,allofusareonaspaceship,theplanetEarth.We
[originaltext]Acommunitytheatreisanimportantpartofalmosteverycity
[originaltext]W:WhatdoyouthinkofJohn?M:Well,comparedtoBill,heisge
[originaltext]W:WhatdoyouthinkofJohn?M:Well,comparedtoBill,heisge
[originaltext]W:WhatdoyouthinkofJohn?M:Well,comparedtoBill,heisge
[originaltext]W:WhatdoyouthinkofJohn?M:Well,comparedtoBill,heisge
[originaltext]Manypeopledislikewalkingintothebankstandinginlongli
[originaltext]Manypeopledislikewalkingintothebankstandinginlongli
[originaltext]Manypeopledislikewalkingintothebankstandinginlongli
随机试题
Anewstudyusesadvancedbrain-scanningtechnologytocastlightontoat
[originaltext]Wereyouthefirstorthelastchildinyourfamily?Orwere
Hetoldmethat______nothingtherewasworthlookinginto.A、nearlyB、almostC、
矩形截面尺寸不小于()。A.70.7mm×70.7mm B.40mm×40m
乙炔瓶必须配备合格的乙炔专用(),方可使用。A.密封件 B.减压器 C
2009年度全国旅行社营业收入为1806.53亿元,同比增长8.64%;毛利润
下列药物具有口服降血糖作用的药物是A.格列美脲 B.二甲双胍 C.胰岛素
一种熨斗支架,由下列零件构成:铝制支架和底座(50%)、铜镍合金制通风板(20%
下列各项中,不属于企业存货核算范围的是( )。A.在产品 B.工程物资 C.
在心肌功能良好情况下,中心静脉压每下降0.68kPa(7cmH2O),一般成人循
最新回复
(
0
)