首页
登录
职称英语
A. limited B. distinguish C. unlike D. particular E. triggerF. inefficient G. c
A. limited B. distinguish C. unlike D. particular E. triggerF. inefficient G. c
游客
2024-09-08
35
管理
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. [br] 【C8】
选项
答案
G
解析
空格前的can提示,此处填入动词原形。new receptors本来是没有的(所以对某些花香不敏感),经与刺激物经常接触而产生,从而可以清晰感受到这些刺激。这是从无到有的过程,create“创造;引发”符合语义。triggerthe receptors(激活受体)是英语中常见的搭配,但所谓“激活”应该是对现已存在的(但没有起作用的)事物而言。既然大脑中并不存在这种气味的受体,“激活”也就无从谈起,故不选trigger“激活,触发”。
转载请注明原文地址:https://tihaiku.com/zcyy/3748901.html
相关试题推荐
A.limitedB.idealC.motivatedD.sourcesE.distributedF.assignedG
A.limitedB.idealC.motivatedD.sourcesE.distributedF.assignedG
A.limitedB.idealC.motivatedD.sourcesE.distributedF.assignedG
A.limitedB.idealC.motivatedD.sourcesE.distributedF.assignedG
A.limitedB.idealC.motivatedD.sourcesE.distributedF.assignedG
A、Quitelonely.B、Verysafe.C、Notveryconvenient.D、Notparticularlydangerous
Choosingacarisnotunlikechoosingadress.Youshouldnotonlyreadthepric
Anunlimitedarmsrace______wellincreasethedangerofwar.A、mayB、canC、must
A.limitedB.distinguishC.unlikeD.particularE.triggerF.inefficientG.c
A.limitedB.distinguishC.unlikeD.particularE.triggerF.inefficientG.c
随机试题
Thankyouverymuchformeetingwithmeyesterdayaboutourproject.Ireally
Themorningaftermyteachercame,sheledmeintoherroomandgavemeadol
Apersonwithgoodmannersispopularwithothersbecause______.[br]Ifyourec
声波发射电路幅值为()。A.10~200V B.100~1000V C.5
游客报名参团时所涉及的保险通常有( )。A.旅行社责任险 B.旅游意外保险
应用异烟肼时常并用维生素B的目的是()A.减轻肝损害 B.减轻肾损害
变质的药品属于A.假药 B.劣药 C.不合格药品 D.可回收药品 E.召
2020年,F省全年粮食产量502.32万吨,比上年增加8.42万吨,增长1.7
近年来,为避免煤矿安全事故的发生,很多煤矿都加强了对安全生产的重视程度。公开资料
质量数据统计分析方法不包括()。A.统计调查表 B.分层法 C.矩阵图
最新回复
(
0
)