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
A. limited B. distinguish C. unlike D. particular E. trigger F. inefficient G. create H. emergency I. incompetent J. detecting K
A. limited B. distinguish C. unlike D. particular E. trigger F. inefficient G. create H. emergency I. incompetent J. detecting K
admin
2017-02-18
21
问题
A. limited B. distinguish C. unlike D. particular E. trigger
F. inefficient G. create H. emergency I. incompetent J. detecting
K. aware L. messages M. unusual N. surfaces O. confined
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, but this is largely because,【C1】______ animals, we stand upright. This means that our noses are【C2】______to perceiving those smells which float through the air, missing the majority of smells which stick to【C3】______. In fact, though, we are extremely sensitive to smells, even if we do not generally realize it. Our noses are capable of【C4】______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【C5】______smell receptors in the nose. These receptors are the cells which sense smells and send【C6】______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 exposed 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【C8】______new receptors if necessary. This may also explain why we are not usually sensitive to our own smells-we simply 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.
【C5】
选项
答案
D
解析
此处需要填入修饰smell receptors的词。本句的意思是“这也许是因为有些人缺乏……基因,这种基因能在鼻子里生成针对某种气味的感受器”。空格前面一句指出不同的人对花香的嗅觉是不一样的,因此该空格应该表达“特定的”的含义。particular“特定的,特别的”符合题意。文章并未对各种感受器是否罕见进行说明,unusual“罕见的”不符合语义。
转载请注明原文地址:https://kaotiyun.com/show/HwJK777K
0
专业英语四级
相关试题推荐
Daybyday,thelittlegirlgotamoreandmorebeautifulface______.
Hewouldhavefinishedhiscollegeeducation,buthe______toquitandfindajobtosupporthisfamily.
______thehelpofmyEnglishteacher,Iwouldnothavesucceededinthespeechcontest.
MembersofParliamentarerequiredto______alltheirfinancialinterests.
Itisimperativethatyou______youresignationbeforeFriday.
Thereisnodoubt______buyingthingsonlinemakeslifealittleeasier.
Hehasmadeanameforhimselfinthefieldofcomputers.Theunderlinedpartmeans______.
Biologically,thereisonequalitythatdistinguishesusfromanimals;theabilitytolaugh.Andlaughter,inturn,dependsont
HealsosuggestedthatCongressspeedtheprocessofobtaining______residentstatusforhighlyskilledworkers.
A、Infrontofawashingmachine.B、Infrontofarefrigerator.C、Infrontofafaxmachine.D、Infrontofacomputer.C本题考查地点。由句
随机试题
心脾两虚,气血不足而心悸怔忡者,治宜选用()心肾两虚,阴亏血少而心悸怔忡者,治宜选用()
药物体内转运的速度过程分为
护理程序各步骤的排列顺序是
对于钻孔扩底灌注桩,其扩底端直径与桩身直径之比D/d不应大于()。
从所给的四个选项中,选择最适合的一个填入问号处,使之呈现一定的规律性。
()是课程计划构成的核心内容。
Asia’srealboat-rockerisagrowingChina,notJapan,aseniorAmericaneconomistobserved.Thereissomuchnoisesurround
Sample是一个类,执行下列语句后,调用Sample类的构造函数的次数是Samplea[2],*P=FlewSample;
小李今年毕业后,在一家计算机图书销售公司担任市场部助理,主要的工作职责是为部门经理提供销售信息的分析和汇总。请你根据销售数据报表(“Excel.xlsx”文件),按照如下要求完成统计和分析工作:根据图书编号,请在“订单明细”工作表的“图书名称
Directions:Forthispart,youareallowed30minutestowriteashortessayentitledSchoolbags:TooHeavyforSchoolbags.You
最新回复
(
0
)