首页
登录
职称英语
A. limited B. distinguish C. unlike D. particular
A. limited B. distinguish C. unlike D. particular
游客
2023-10-23
31
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] 【C5】
选项
答案
D
解析
此处需要填入修饰smell receptors的词。本句的意思是“这也许是因为有些人缺乏……基因,这种基因能在鼻子里生成针对某种气味的感受器”。空格前面一句指出不同的人对花香的嗅觉是不一样的,因此该空格应该表达“特定的”的含义。particular“特定的,特别的”符合题意。文章并未对各种感受器是否罕见进行说明,unusual“罕见的”不符合语义。
转载请注明原文地址:https://tihaiku.com/zcyy/3123256.html
相关试题推荐
Thefundingforpostgraduateresearchislimited.Somepeoplethinkthatfin
A.particularlyB.correlatedC.averageD.peaceE.singleF.callsG.ordinary
A.particularlyB.correlatedC.averageD.peaceE.singleF.callsG.ordinary
A.particularlyB.correlatedC.averageD.peaceE.singleF.callsG.ordinary
A.particularlyB.correlatedC.averageD.peaceE.singleF.callsG.ordinary
A.particularlyB.correlatedC.averageD.peaceE.singleF.callsG.ordinary
A.particularlyB.correlatedC.averageD.peaceE.singleF.callsG.ordinary
A.informationB.lawC.damageD.ensureE.secureF.initiallyG.particularly
A.informationB.lawC.damageD.ensureE.secureF.initiallyG.particularly
A.informationB.lawC.damageD.ensureE.secureF.initiallyG.particularly
随机试题
[originaltext]UnidentifiedkidnapperssnatchedtwoNorwegianandtwoUkrainian
EarthquakesWhatcausesearthquakes?Theearth
兴奋一收缩耦联中Na起了重要作用。()
图示梁自重不计,在集中重量W作用下,C点的竖向位移Δc=1cm,则该体系的自振
患者冯某先是食欲不振,后来出现右上腹疼痛、巩膜等黄染。经医院诊断是肝癌晚期,护士
有关站立前期先天性髋关节脱位,下列不正确的是A.双大腿内侧皮肤皱褶不对称 B.
下列关于出国留学贷款说法中,正确的有()。A.贷款期限最短为1年 B.需
如图:已知直线PA:y=kx+4与直线PB:y=x+b相交于P(1,2),且分别
2010年,天津市全市生产总值突破9000亿元。据初步核算,并经国家统计局评估审
癌组织中实质少,间质多是 A.乳腺浸润性导管癌 B.乳腺导管内癌 C.乳腺
最新回复
(
0
)