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
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, but this is lar
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, but this is lar
admin
2019-09-18
67
问题
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, but this is largely because, unlike animals, we stand upright This means that our noses are【C1】______to perceiving those smells which float through the air, missing the majority of smells which stick to surfaces. In fact, though, we are【C2】______sensitive to smells, even if we do not generally realize it Our noses are capable of【C3】______human smells even when these are diluted to far below one part in one million.
Strangely, some people find that they can smell one type of flower but not another, whereas others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate【C4】______smell receptors in the nose. These receptors are the cells which sense smells and send【C5】______to the brain. However, it has been found that even people insensitive to a certain smell at first can suddenly become sensitive to it when【C6】______to it often enough.
The explanation for insensitivity to smell seems to be that the brain finds it【C7】______to keep all smell receptors working all the time but can create new receptors if necessary. This may also explain why we are not usually sensitive to our own smells—we【C8】______do not need to be. We are not【C9】______of the usual smell of our own house, but we notice new smells when we visit someone else’s. The brain finds it best to keep smell receptors available for unfamiliar and【C10】______signals such as the smell of smoke, which might indicate the danger of fire.
A)simply E)permanently I)dedicated M)distinguishing
B)emergency F)limited J)exposed N)particular
C)aware G)sure K)impulses O)extremely
D)detecting H)inefficient L)messages
【C5】
选项
答案
L
解析
空格所在句是which引导的定语从句,填入的词作send的宾语。messages指“信息”,这里指感受器把信息传给大脑.符合句子逻辑。impulses多表示人的冲动或兴奋,用在此处不合适。
转载请注明原文地址:https://jikaoti.com/ti/eEIFFFFM
0
大学英语六级
相关试题推荐
A、Asenseofhumor.B、Goodlook.C、Intelligence.D、Outgoing.A
A、Producegreenfood.B、Wastenofood.C、Becomevegetarian.D、Growvegetables.C
Throughoutevolution,humanshavebeenactive.Ourancestorschasedpreyashunter-gatherersand【C1】______frompredators.Morer
Intheatmosphere,carbondioxideactsratherlikeaone-waymirror—theglassintheroofofagreenhousewhichallowsthesun’s
ToliveintheUnitedStatestodayistogainanappreciationforDahrendorf’sassertionthatsocialchangeexistseverywhere.T
ToliveintheUnitedStatestodayistogainanappreciationforDahrendorf’sassertionthatsocialchangeexistseverywhere.T
PeoplewhospendalotoftimesurfingtheInternetaremorelikelytoshowsignsofdepression,BritishscientistssaidonWedn
Peoplewantactiononnoise,arecentpublicmeetinginBrisbaneshowed.Somewanttechnicalimprovementssuchasquieterairco
A、Shefoundherfirstjobworkingwithacomputer.B、Shelostherjobowingtotheuseofcomputers.C、Shewaselectric-shocked
A、TheOpenUniversity.B、TheYoungFoundation.C、TheBritishgovernment.D、TheSchoolofEverything.B该题问新型学校的想法来自哪里,录音开头说到这个想法源
随机试题
在Windows7中删除某程序的快捷键方式图标,表示【】
属于血管壁异常的出血性疾病是
关于《国家赔偿法》第33条“侵犯公民人身自由的,每日的赔偿金额按照国家上年度职工日平均工资计算”中规定的“上年度”的理解,下列哪一说法是正确的?()
建设工程立项阶段建设监理工作的主要内容不包括( )。
某高层建筑,针对其屋面防水等级及设防要求的说法,正确的有()。
拟办是指()。
2013年,甲市平均每月办理结婚登记约()件。
InJuly,almostunnoticedbythenationalpress,adeadlybirdvirusarrivedonapheasantfarminSurrey.ExpertsfromtheDepa
【B1】【B9】
Theuseofonenameforthatofanotherassociatedwithitisrhetoricallycalled______.
最新回复
(
0
)