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
2017-03-23
54
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 statuses are not solely fixed by the genes.【C3】______ , the learning that occurs is often at an early age in a process that is called imprinting. Imprinting is clearly not instinctive, but it is not quite like the learning of humans; it is something in between the two. An illustration best【C4】______ the nature of imprinting. Once, biologists thought that ducklings followed the mother duck because of instincts. Now we know that, shortly after they hatch, ducklings fix【C5】______ 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【C6】______ for the mother duck at the time when imprinting occurs. Thus, social ties can be considerably【C7】______ , even ones that have a considerable base【C8】______ by genetics.
Even among the social insects something like imprinting must influence social behavior. For example, biologists once thought bees communicated with others purely【C9】______ 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【C10】______ very good mother but Jane Goodall reports that some chimps carry the infant upside down or otherwise fail to nurture the young.
【C3】
选项
A、What’s more
B、Hence
C、But
D、However
答案
D
解析
A项What’s more可表示递进;B项Hence意为“因此,所以”,表示因果关系。文中上一段提到“学习是动物的社会生活的一部分”,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在表转折时一般不与句子分开,所以D项However为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/7HLi777K
0
在职申硕(同等学力)英语
相关试题推荐
Anocturnal(夜间活动的)mothhasbecomethefirstanimalknowntoseecoloursinthedeadofnight.Themothusesthisvisualtalentt
Itisnoteasytoremaintranquilwheneventssuddenlychangeyoulife.
Thisrulecannotbe______toeverycase.
Isn’tit________whenyoulearnsomethingyou’veneverknownbefore?
FaithinmedicinerunsdeepinAmerica.Wespendmoreperpersononhealthcarethananyothernation.Whetherweeattoomucho
Itwasverydifficulttobuildapowerstationinthedeepvalley,butit______aswehadhoped.
Formanyofus,askingforhelpisadifficultconcept.Wemayfeelasifweareadmittingaweaknessthattheworldwouldnoth
TheEuropeanUnionrevealedonJanuary23rdhowitplanstosavetheworld.Amammothclimate-changeplanspellsoutindetailh
TheEuropeanUnionrevealedonJanuary23rdhowitplanstosavetheworld.Amammothclimate-changeplanspellsoutindetailh
TheApolicefinallyBcaughtupwiththemanCwhomtheythoughtwastheDescapedprisoner.
随机试题
第一类精神药品的处方应当至少保存()
怠速不良指发动机怠速时_______或转速_______,发动机转速运转_______、_______。
DNA复制不需要的酶是
A.1kcalB.4kcalC.7kcalD.9kcalE.11kcal每克糖类能产热量为
妊娠期生殖系统的变化错误的是()
甲企业为一家大型商业流通企业,主要经销家电产品,其账务处理使用汇总记账凭证账务处理程序。下列各项中,属于甲企业月末登记总账依据的是()。
反映了一国国际收支的综合情况,可以衡量国际收支对一国储备压力的国际收支局部差额是()。
你是单位的材料审核员,有同志材料没带够请你开绿灯。你怎么办?
请结合相关认知发展或智力发展理论,评述当前儿童教育实践中强调早期智力开发的做法。
Isxpositive?(1)x2-1=0(2)x3+1=0
最新回复
(
0
)