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
考研
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, 【C1】______this
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, 【C1】______this
admin
2019-07-10
16
问题
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, 【C1】______this is largely because, 【C2】______animals, we stand upright. This means that our noses are【C3】______to perceiving those smells which float through the air,【C4】______the majority of smells which stick to surfaces. In fact,【C5】______, we are extremely sensitive to smells, 【C6】______we do not generally realize it. Our noses are capable of 【C7】______human smells even when these are【C8】______to far below one part in one million.
Strangely, some people find that they can smell one type of flower but not another, 【C9】______others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate【C10】______smell receptors in the nose. These receptors are the cells which sense smells and send【C11】______to the brain. However, it has been found that even people insensitive to a certain smell【C12】______can suddenly become sensitive to it when【C13】______to it often enough.
The explanation for insensitivity to smell seems to be that the brain finds it【C14】______to keep all smell receptors working all the time but can【C15】______new receptors if necessary. This may【C16】______explain why we are not usually sensitive to our own smells—we simply do not need to be. We are not【C17】______of the usual smell of our own house, but we【C18】______new smells when we visit someone else’ s. The brain finds it best to keep smell receptors【C19】______for unfamiliar and emergency signals【C20】______the smell of smoke, which might indicate the danger of fire.
【C11】
选项
A、signs
B、stimuli
C、messages
D、impulses
答案
C
解析
考查名词辨析。空格所在句的含义为“这些气嗅觉感受器是一些细胞,它们可以感知到气味,并向大脑发送______”。“向大脑发送信号”符合逻辑与文意,这是简单的名词意义辨析题,故正确答案为C.messages。
转载请注明原文地址:https://kaotiyun.com/show/Qx9Z777K
0
考研英语一
相关试题推荐
Mostpeoplewhotravellongdistancecomplainofjetlag.Jetlagmakesbusinesstravelerslessproductiveandmoreprone【B1】____
Mostpeoplewhotravellongdistancecomplainofjetlag.Jetlagmakesbusinesstravelerslessproductiveandmoreprone【B1】____
Olderpeoplemustbegivenmorechancestolearniftheyaretocontributetosocietyratherthanbeafinancialburden,accordi
Olderpeoplemustbegivenmorechancestolearniftheyaretocontributetosocietyratherthanbeafinancialburden,accordi
Dopeoplegethappierormorefoul-temperedastheyage?Stereotypesofirritableneighbors【B1】______,scientistshavebeentryi
Humanbeingsareanimals.Webreathe,eatanddigest,andreproducethesamelife【B1】______commontoallanimals.Inabiologi
Humanbeingsareanimals.Webreathe,eatanddigest,andreproducethesamelife【B1】______commontoallanimals.Inabiologi
Humanbeingsareanimals.Webreathe,eatanddigest,andreproducethesamelife【B1】______commontoallanimals.Inabiologi
Humanbeingsareanimals.Webreathe,eatanddigest,andreproducethesamelife【B1】______commontoallanimals.Inabiologi
Humanbeingsareanimals.Webreathe,eatanddigest,andreproducethesamelife【B1】______commontoallanimals.Inabiologi
随机试题
关于web浏览器自身的功能,以下描述正确的是()
关于证券交易所,下列哪一表述是正确的?
不考虑税费等其他因素,甲公司2015年的下列会计处理中,正确的是()。[2016年9月真题]Ⅰ.甲公司以公允价值为1000万元的存货(成本为800万元)换入非关联方的一台机器设备,同时支付补价300万元,甲公司确认营业收入1000万元
项目的财务评估不包含()
物流信息系统是把各种物流活动与某个一体化过程连接在一起的通道,物流信息系统的基本功能有()。
简述人民代表大会制度的内容。
美国独立战争的转折点是()。
From:DavidBakerTo:JimmyEvans@Subject:AccountNo.32569Date:February25DearMr.Evans,Wereceivedyourmailyesterday
What’sthenewsitemmainlyabout?
A、Hehaschangedhismind.B、Hedidforgetaboutthetrip.C、Heneedstobereminded.D、Heisreadyforthetrip.D
最新回复
(
0
)