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
专升本
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals,【56】this is larg
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals,【56】this is larg
admin
2011-01-24
37
问题
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals,【56】this is largely because,【57】animals, we stand upright. This means that our noses are【58】to perceiving those smells which float through the air,【59】the majority of smells which stick to surfaces. In fact【60】, we are extremely sensitive to smells,【61】we do not generally realize it. Our noses are capable of【62】human smells even when these are【63】to far below one part in one million.
Strangely, some people find that they can smell one type of flower but not another,【64】others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate【65】smell receptors in the nose. These receptors are the cells which, sense smells and send【66】to the brain. However, it has been found that even people insensitive to a certain smell【67】can suddenly become sensitive to it when【68】to it often enough. The explanation for insensitivity to smell seems to be that brain finds it【69】to keep all smell receptors working all the time but can【70】new receptors if necessary. This may【71】explain why we are not usually sensitive to our own smells. We simply do not need to be. We are not【72】of the usual smell of our own house but we【73】new smells when we visit someone else’s. The brain finds it best to keep smell receptors【74】for unfamiliar and emergency signals【75】the smell of smoke, which might indicate the danger of fire.
选项
A、sure
B、sick
C、aware
D、tired
答案
C
解析
词义辨析题。sure确信的;sick厌倦的;aware意识到……的;tired厌倦的;sick of=be tired of。根据文意应该选be aware of。
转载请注明原文地址:https://kaotiyun.com/show/ChGC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Hethoughtthatthebadworkingconditionswouldresultinthestrikeoftheworkers.
Whileactingmayruninthefamily,itwasn’tAngelinaJolie’sonlychoicewhenshethoughtaboutherfuturecareer.AlthoughJo
Whileactingmayruninthefamily,itwasn’tAngelinaJolie’sonlychoicewhenshethoughtaboutherfuturecareer.AlthoughJo
Whileactingmayruninthefamily,itwasn’tAngelinaJolie’sonlychoicewhenshethoughtaboutherfuturecareer.AlthoughJo
Whileactingmayruninthefamily,itwasn’tAngelinaJolie’sonlychoicewhenshethoughtaboutherfuturecareer.AlthoughJo
Oncesomebodythoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautomob
Oncesomebodythoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautomob
Howwelldoyouknowyourdog?Theansweris,notnearlyaswellasyourdogknowsyou.Giventherightmotivation,humanscanc
随机试题
我国《碾压式土石坝设计规范》(SL274—2001)规定,高度为40m的坝为()。
A.黏滞阻力B.惯性阻力C.气道阻力D.肺弹性阻力E.胸廓弹性阻力肺泡液一气界面的表面张力属于
关于急性血源性骨髓炎的叙述不正确的是
A.青色、赤色B.黑色、青色C.赤色、白色D.赤色、黑色E.黄色、黑色湿证、水饮内停,可出现的面色变化有
对于填制有误的原始凭证,()负有更正和重新开具的法律义务。
社会工作者准备采用定量研究方法开展一项研究,下列做法正确的有()。[2010年真题]
构建社会主义和谐社会关键在()。
在多道程序系统中,为了保证公共变量的完整性,各进程应互斥进入相关临界区。所谓临界区,是指(21)。多道程序的引入主要是为了(22)。操作系统采用SPOOLing技术提高了(23)的利用率。在操作系统中,(24)是以时间换取空间的技术。系统出现死锁的原因是(
Attheturnofthe20thcentury,DutchphysicianChristiaanEijkmanshowedthatdiseasecanbecausednotonlybymicroorganism
A、Toteachinanelementaryschoolforafewyears.B、Todevotehislifetoresearchinscience.C、Tomakeupafamilywithhis
最新回复
(
0
)