首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
In the past few decades, remarkable findings have been made in ethology, the study of animal social behavior. Earlier scientists
In the past few decades, remarkable findings have been made in ethology, the study of animal social behavior. Earlier scientists
admin
2018-04-27
90
问题
In the past few decades, remarkable findings have been made in ethology, the study of animal social behavior. Earlier scientists had【B1】______that nonhuman social life was almost totally instinctive or fixed by genetics. Much more careful observation has shown that 【B2】______ variation occurs among the social ties of most species, showing that learning is a part of social life. That is, the【B3】______are not solely fixed by the genes.
【B4】______, the learning that occurs is often at an early age in a process that is called imprinting. Imprinting is clearly 【B5】______ instinctive, but it is not quite like the learning of humans; it is something in between the two. An illustration best【B6】______the nature of imprinting. Once, biologists thought that ducklings followed the mother duck because of instincts. Now we know that, shortly 【B7】______ they hatch, ducklings fix 【B8】______ any object about the size of a duck and will henceforth follow it. So ducklings may follow a basketball or a briefcase if these are 【B9】______ for the mother duck at the time when imprinting occurs. Thus, social ties can be considerably【B10】______, even ones that have a considerable base【B11】______by genetics.
Even among the social insects something like imprinting【B12】______influence social behavior. For example, biologists once thought bees communicated with others purely【B13】______instinct. But, in examining a "dance" that bees do to indicate the distance and direction of a pollen source, observers found that bees raised in isolation could not communicate effectively. At a higher level, the genetic base seems to be much more for an all purpose learning rather than the more specific responses of imprinting. Chimpanzees, for instance, generally【B14】______very good mother but Jane Goodall reports that some chimps carry the infant upside down or【B15】______fail to nurture the young. She believes that these females were the youngest or the 【B16】______ child of a mother. In such circumstances, they did not have the opportunity to observe how their own mother【B17】______for her young. Certainly adolescent chimps who are still with their mothers when other young are born take much interest in the rearing of their young brother or sister. They have an excellent opportunity to learn, and the social ties that are created between mother and young 【B18】______ Goodall to describe the social unit as a family. The mother offspring tie is beyond 【B19】______; there is some evidence to 【B20】______ that ties also continue between siblings of the same sex, that is "brother-brother" and "sister-sister".
【B7】
选项
A、than
B、before
C、when
D、after
答案
D
解析
考查固定搭配。shortly after为固定词组,意思是“…之后立即”,因此正确答案为D.after。其他三项均不符合题意。
转载请注明原文地址:https://kaotiyun.com/show/AB6Z777K
0
考研英语一
相关试题推荐
Imagineaworldinwhichtherewassuddenlynoemotion—aworldinwhichhumanbeingscouldfeelnoloveorhappiness,noterror
Collegestudentsaremorestressedoutthaneverbefore—atleastaccordingtothelatestfindingsofalarge,nationalsurveyth
Collegestudentsaremorestressedoutthaneverbefore—atleastaccordingtothelatestfindingsofalarge,nationalsurveyth
Collegestudentsaremorestressedoutthaneverbefore—atleastaccordingtothelatestfindingsofalarge,nationalsurveyth
AsValentine’sDayapproaches,manysinglepeoplebegintofeelalittlesorryforthemselves.Onaday【C1】______bycouples,thi
AsValentine’sDayapproaches,manysinglepeoplebegintofeelalittlesorryforthemselves.Onaday【C1】______bycouples,thi
AsValentine’sDayapproaches,manysinglepeoplebegintofeelalittlesorryforthemselves.Onaday【C1】______bycouples,thi
NowthatwearefairlysurethattherearemanyEarth-likeplanetsintheGalaxy,thetimeisripe(oralmostso)towonderwhet
NowthatwearefairlysurethattherearemanyEarth-likeplanetsintheGalaxy,thetimeisripe(oralmostso)towonderwhet
NowthatwearefairlysurethattherearemanyEarth-likeplanetsintheGalaxy,thetimeisripe(oralmostso)towonderwhet
随机试题
相同条件下,K2Cr2O7的氧化能力比KMnO4的氧化能力()。
乳腺囊性增生病的乳头溢液呈
肝硬化患者最严重的并发症是
根据我国宪法规定,公民的政治自由包括以下哪几项内容。()
安全生产监督管理的内容包括()
根据下述材料,回答下面题目:给定4年内远期利率,如表10-2所示。假定债券的票面价值均为1000元,且远期利率保持不变。假定某投资者刚买了一张4年期的零息票债券,该投资的第一年的回报率是( )。
地方各级政府编制的土地利用总体规划中的建设用地总量,应()上一级土地利用总体规划确定的控制指标。
按技术等级划分,导游人员可以分为()。
这些年来党中央多次提出建立科学发展观和正确的政绩观,而且把这些作为关系到国家经济、社会发展的大事,对这个问题你是怎样理解的?
根据法律规定,继承开始后,遗产处理前,继承人未作出任何表示,则()
最新回复
(
0
)