首页
登录
职称英语
In the past few decades, remarkable findings have been made in ethology, the
In the past few decades, remarkable findings have been made in ethology, the
游客
2025-05-06
41
管理
问题
In the past few decades, remarkable findings have been made in ethology, the study of animal social behavior. Earlier scientists had【21】that nonhuman social life was almost totally instinctive or fixed by genetics. Much more careful observation has shown that【22】variation occurs among the social ties of most species, showing that [earning is a part of social life. That is, the【23】are not solely fixed by the genes.【24】, the learning that occurs is often at an early age in a process that is called imprinting. Imprinting is clearly【25】instinctive, but it is not quite like the learning of humans, it is something in between the two. An illustration best【26】the nature of imprinting. Once, biologists thought that ducklings followed the mother duck because of instincts. Now we know that. shortly【27】they hatch, ducklings fix【28】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【29】 for the mother duck at the time when imprinting occurs. Thus, social ties can be considerably【30】, even ones that have a considerable base【31】by genetics.
Even among the social insects something like imprinting【32】influence social behavior. For example, biologists once thought bees communicated with others purely【33】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【34】very good mother but Jane Goodall reports that some chimps carry the infant. upside down or【35】fail to nurture the young. [br]
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://tihaiku.com/zcyy/4064425.html
相关试题推荐
Bothplantsandanimalsofmanysortsshowremarkablechangesinform,struc
Bothplantsandanimalsofmanysortsshowremarkablechangesinform,struc
Bothplantsandanimalsofmanysortsshowremarkablechangesinform,struc
Inthepastfewdecades,remarkablefindingshavebeenmadeinethology,the
Inthepastfewdecades,remarkablefindingshavebeenmadeinethology,the
Inthepastfewdecades,remarkablefindingshavebeenmadeinethology,the
Inthepastfewdecades,remarkablefindingshavebeenmadeinethology,the
Inthepastfewdecades,remarkablefindingshavebeenmadeinethology,the
Inthepastfewdecades,remarkablefindingshavebeenmadeinethology,the
Inthepastfewdecades,remarkablefindingshavebeenmadeinethology,the
随机试题
Wheremightthisannouncementbeheard?[br][originaltext]Ladiesandgentlemen
[originaltext]M:I’mlookingforanunfurnishedtwo-bedroomapartment,butall
When-ofacertainnumberissubtractedfromthenumberandthenthisdifferenc
Whenitcomesto______(帮妻子干家务活儿),Johnnevercomplains.helpinghiswifewithth
质量策划的难点和重点就是落实质量职责。
有防水要求的建筑地面工程的立管、套管、地漏处不应渗漏,坡向应正确、无积水。检验方
用来指出下一条待执行指令地址的是()。A.程序计数器 B.通用寄存器 C
堪称血管成形术之父,1964年首先发明同轴导管的是A.WernerForssm
A.心源性哮喘 B.支气管哮喘 C.慢性支气管炎 D.原发性支气管癌 E
城镇燃气,按燃气类别及其特性指标华白数分类,主要有()。A.人工煤气 B
最新回复
(
0
)