首页
登录
职称英语
The human nose is an underrated tool. Humans are often thought to be insensi
The human nose is an underrated tool. Humans are often thought to be insensi
游客
2024-04-02
38
管理
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 [br] 【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://tihaiku.com/zcyy/3537916.html
相关试题推荐
Archaeologistshavelongthoughtthatstoneshipsservedasgravesforoneo
Archaeologistshavelongthoughtthatstoneshipsservedasgravesforoneo
Archaeologistshavelongthoughtthatstoneshipsservedasgravesforoneo
Archaeologistshavelongthoughtthatstoneshipsservedasgravesforoneo
Archaeologistshavelongthoughtthatstoneshipsservedasgravesforoneo
Movingfarmorequicklythanmanyhadthoughtlikelyorpossible,lawmakers
Movingfarmorequicklythanmanyhadthoughtlikelyorpossible,lawmakers
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstresssee
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstresssee
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstresssee
随机试题
Somepeoplethinkthatwiththedevelopmentoftechnology,ourtraditionalc
[originaltext]F:Excuseme,professor,sinceclassiscanceledonWednesday,wh
人们抱怨当地政府在处理污染问题上力度不够。Peoplecomplainedthatthelocalgovernmentdidn’ttryits
孕妇,28岁,GP,妊娠30周。近1周腹部迅速增大,腹胀痛、气促、心悸、不能平卧
下列不属于资本市场的有()。 ①大额可转让存单市场②中长期国债市场 ③股
Thechangeinthatvillagewasmiraculou
A.30分钟 B.1天 C.2天 D.1周 E.3周血小板浓缩悬液在22
乙公司为甲公司的全资子公司,且甲公司无其他子公司,乙公司2017年实现净利润50
A.甲氧苄啶 B.甲硝唑 C.氯霉素 D.磺胺嘧啶 E.环丙沙星抑制细菌
男,38岁。间断活动后尿色加深1周,既往反复痛风发作2年。查体:BP120/8
最新回复
(
0
)