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
2017-12-07
64
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 0) extremely
D) detecting H) inefficient L) messages
【C6】
选项
答案
J
解析
本题所在句子是一个由when引导的条件句的省略形式(省略了they are),阐释了“使对某种气味不敏感的人突然变敏感,,的条件,空格处应填入动词的分词形式,且能与to搭配。词库中符合语法的有limited和exposed。exposed放入句中指“当人们经常接触这种气味时,就会突然对它变得敏感”,符合逻辑。而limited代入后逻辑不对。
转载请注明原文地址:https://kaotiyun.com/show/P4U7777K
0
大学英语六级
相关试题推荐
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstressseemstoaffecttheimmunedefensesofloweranimalsto
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstressseemstoaffecttheimmunedefensesofloweranimalsto
Movingfarmorequicklythanmanyhadthoughtlikelyorpossible,lawmakersinthe10-memberHouse-Senatecommitteeannouncedth
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’twanttoburn.Butformarineanimalslikewhales,t
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’twanttoburn.Butformarineanimalslikewhales,t
随机试题
描写时间驱动过程常用什么方法?
Timeshavechangedandtheideasoftheyoungandtheoldaboutthesamethingareoftenillcontradiction.Forexample,parent
TheNorthernPikeisaverybadfish.Itisabig,hungryfish,andswallowslittlefishsuchastroutandperch.ManyNorthern
国务院财政部门的预算管理职权有()。
守法合规原则是指遵循公平、公正的原则,维护客户的合法权益,诚实守信,勤勉尽责,避免利益冲突。()
新冠肺炎疫情防控常态化以来,社会工作者小王发现,某社区的很多老年人由于不会使用智能技术,在购物、出行和就医时遇到诸多不便。许多老年人说“我们老了,跟不上时代了,学不会这些新东西啊!”小王计划设计协助老人跨越“数字鸿沟”的服务项目以解决老年人的上述问题。为此
某公司每年都新招很多员工,说明公司业务发展壮大。下列哪项最能削弱这一论断?
在某次考试中,有3个关于北京旅游景点的问题,要求考生每题选择某个景点的名称作为唯一答案。其中6位考生关于上述3个问题的答案依次如下:第一位考生:天坛、天坛、天安门;第二位考生:天安门、天安门、天坛;第三位考生:故宫、故宫、天坛;第四位考生:天坛、天安门、故
Duringhertwo-weekstayinBeijing,Elizabethnever______achrome(chance)topracticeherChinese.
Withthousandsofyearsofhistoryandmythology【C1】______,Athens—named【C2】______theolive-tree-lovingAthena(goddesso
最新回复
(
0
)