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
外语
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
2020-03-30
26
问题
In the past few decades, remarkable findings have been made in ethology, the study of animal social behavior. Earlier scientists had【C1】______that nonhuman social life was almost totally instinctive or fixed by genetics. Much more careful observation has shown that【C2】______variation occurs among the social ties of most species, showing that learning is a part of social life. That is, the【C3】______are not solely fixed by the genes.【C4】______, the learning that occurs is often at an early age in a process that is called imprinting. Imprinting is clearly【C5】______instinctive, but it is not quite like the learning of humans; it is something in between the two. An illustration best【C6】______the nature of imprinting. Once, biologists thought that ducklings followed the mother duck because of instincts. Now we know that, shortly【C7】______they hatch, ducklings fix【C8】______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【C9】______for the mother duck at the time when imprinting occurs. Thus, social ties can be considerably【C10】______, even ones that have a considerable base【C11】______by genetics.
Even among the social insects something like imprinting【C12】______influence social behavior. For example, biologists once thought bees communicated with others purely 【C13】______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【C14】______very good mother but Jane Goodall reports that some chimps carry the infant upside down or【C15】______fail to nurture the young.
【C4】
选项
A、What’s more
B、Hence
C、But
D、However
答案
D
解析
A项What’s more表示递进;B项Hence意为“因此,所以”,表示因果关系。文中上段提到“学习是动物的社会生活的部分”,第二段接着讲“学习发生在动物小时候的印象中期”,两段间不存在递进或因果关系。But在表转折时般不与句子分开,所以D项However为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/4UTO777K
0
考博英语
相关试题推荐
CantheInternethelppatientsjumpthelineatthedoctor’soffice?TheSiliconValleyEmployersForum,asophisticatedgroupo
Between1833and1837,thepublishersofa"pennypress"provedthatalow-pricedpaper,editedtointerestordinarypeople,cou
AItcanbearguedthattheproblems,evensomethingBasfundamentalastheCever-increasedworldpopulation,Dhavebeencausedb
Anewstudysuggeststhatcontrarytomostsurveys,peopleareactuallymorestressedathomethanatwork.Researchersmeasured
TheGreek’sloftyattitudetowardscientificresearch—andthescientists’contemptofutility—wasalongtimedying.Foramille
Graphenemustsurelybeoneofthemostexcitingdevelopmentsinmodernscience.Indeed,thesubstanceissoextraordinarythat
TestsconductedattheUniversityofPennsylvania’sPsychologicalLaboratoryshowedthatangerisoneofthemostdifficultemot
Thedevelopmentofwritingwasoneofthegreathumaninventions.Itisdifficult【C1】______manypeopletoimaginelanguagewitho
Ithasbeenrevealedthatnearlyoneinfivedegreecourseshasbeen______sincethetriplingoftuitionfeesto£9,000ayear.
Bythemid-nineteenthcentury,theterm"ice-box"hadenteredtheAmericanlanguage,buticewasstillonlybeginningtoaffect
随机试题
某企业于2007年9月5日对一生产线进行改扩建,改扩建前该生产线的原价为900万元,已提折旧200万元,已提减值准备50万元。在改扩建过程中,领用工程物资300万元,领用生产用原材料50万元,原材料的进项税额为8.50万元。发生改扩建人员工资80万元,用银
Asfuelpricesrose,buscompaniesraisedtheirfaresand().
枸橼酸铋钾抗消化性溃疡的作用机制是
面部危险三角区之所以"危险",主要是该区域
下列哪项属于刚性基础?
【2020年真题】根据《危险化学品单位应急救援物资配备要求》(GB30077),某氯碱企业为液氯充装岗位(每班作业人数6人)配备应急救援器材,包括推车式氯气捕消器、应急处置工具箱、正压式空气呼吸器、化学防护服、过滤式防毒面具、便携式氯气检测仪等。下列应急
以下属于证券经营机构的禁止行为的有()。
下列事件的先后顺序是()。①冯玉祥五原誓师②北伐军占领南京③收回汉口、九江英租界④蒋介石制造“中山舰事件”
请从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。
Ifyouhaveanyquestionsorsuggestionsforimprovement,pleasedonot_____tocontactourcustomerservicecenter.
最新回复
(
0
)