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
What can dogs see? The answer to this question is disappointing; dogs【C1】______see no colors. The answer is disappointing【C2】___
What can dogs see? The answer to this question is disappointing; dogs【C1】______see no colors. The answer is disappointing【C2】___
admin
2010-07-24
44
问题
What can dogs see? The answer to this question is disappointing; dogs【C1】______see no colors. The answer is disappointing【C2】______many owners of dogs will naturally be sorry that their dogs cannot see colors which to them are beautiful. But then, they may【C3】______that clogs have an extraordinary【C4】______sense of smell. The dog’s world is【C5】______in enjoyable smells,【C6】______it may be colorless.
How do we know if dogs are color-blind? This has been tested in the same way【C7】______it has been discovered what dogs can hear. The【C8】______has been made to train dogs to salivate(流口水)when they are shown【C9】______different colors. Such experiments have【C10】______failures; it has been found impossible to make dogs【C11】______colors from one another【C12】______signals for their dinner. This question requires further【C13】______with other techniques, but so far as the available scientific evidence【C14】______, dogs seem to be color-blind.
Monkeys, on the other hand, are able to distinguish colors. They have been trained successfully to【C15】______their meal to a cupboard, the door of【C16】______was painted in a certain color, and to【C17】______other available cupboards with differently colored doors,【C18】______which there was no food.【C19】______monkeys and apes,【C20】______, most mammals seem to be color-blind. Even bulls have been shown not to see red as a color.
【C4】
选项
A、high
B、tight
C、keen
D、fierce
答案
C
解析
词汇辨析。表示嗅觉灵敏的常用词有:keen、sharp、acute等,所以keen(灵敏的,敏锐的)符合句意,是答案。fierce意为“激烈的、严峻的”。
转载请注明原文地址:https://kaotiyun.com/show/1yN7777K
0
大学英语四级
相关试题推荐
Researchersfoundfamilyinfluenceddelinquency.Attachmentandinvolvementwereboth【S1】______relatedtodelinquency.Children
Researchersfoundfamilyinfluenceddelinquency.Attachmentandinvolvementwereboth【S1】______relatedtodelinquency.Children
Researchersfoundfamilyinfluenceddelinquency.Attachmentandinvolvementwereboth【S1】______relatedtodelinquency.Children
Isitpossibletopersuademankindtolivewithoutwar?Warisanancientinstitutionwhichhasexistedforatleastsixthousan
A、Slimwomenusuallyfidgetlessthanfatwomen.B、Menusuallyfidgetmorefrequentlythanwomen.C、Fidgetinghelpspeopleexpen
A、Morejobscouldbeprovidedthanbefore.B、Morepeoplecouldbeeducatedthanbefore.C、Morebookscouldbeprintedanddistri
A、Becausewhaleskeepabalancebetweenplantsandanimalsonland.B、Becausewhaleseatalotoffish.C、Becausewhaleseatlar
Isthegoaltomakeallofourpaperfromwaste?It’sa【S1】______question.Ifwecollectenoughwaste,couldcompaniesstopusin
随机试题
Teamspirit[A]Teamshavebecomethebasicbuilding-blocksoforganisations.Recruitmentadvertisementsroutinelycallfo
焊丝钢号是熔化极气体保护焊工艺评定的基本因素之一。
A.驼背B.髋部骨折C.全身骨折D.X线检查示假性骨折E.身材变短骨软化症的特征表现最具特征的是
A.培元补肾法B.以毒攻毒法C.凉血止血法D.镇惊开窍法E.消食导滞法用于小儿抽搐、惊痫等病证
A、陶弘景B、赵学敏C、李时珍D、唐慎微E、苏敬《本草经集注》的作者是
刁某花3000元从人贩子手中买来一名13岁幼女欲作妻子,不久女孩的哥哥领公安人员前来解救,在当地派出所工作的刁某的远房亲戚贾某闻讯后暗中通知刁某逃走,刁某未予听从。在公安人员到达时,刁某纠集金某、王某等十几名村民对公安人员进行阻截,其中金某将一名公安人员打
填表。
企业的劳动安全技术规程的主要内容包括三个方面,即工厂技术安全规程、矿山安全规程和()。
在某一个单处理机的系统中,外接了一台打印机,一台输入设备。当前在系统中有二个进程P0、P1已经就绪,进程P0首先获得处理机运行,调度算法为先来先服务,进程P0、P1的运行要求是这样的:P0:计算100ms,打印信息200ms,继续计算100ms,打印信息
操作系统的主要功能是()。
最新回复
(
0
)