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
2024-04-07
15
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 0) extremely
D) detecting H) inefficient L) messages [br] 【C9】
选项
答案
C
解析
空格介于系动词are和介词of之间,推测为固定搭配。能符合此搭配的词有aware和sure。be aware of意为“意识到”,代入句中表示“我们意识不到我们自己的房子通常的气味”,句意通顺。而sure代入句中则表示“对自己房间的熟悉气味没有把握”,不符合逻辑。
转载请注明原文地址:https://tihaiku.com/zcyy/3544352.html
相关试题推荐
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
随机试题
WhatIfACollegeEducationJustIsn’tforEveryone?[A]Longbef
FilmExchangesinAmerica’sEarlyMovieIndustry1.Motionpictu
OverweightpeoplearelikelytosufferfromallthefollowingdiseasesEXCEPT[b
图所示为卷材防水屋面变形缝处构造做法,其中泛水高度a应大于等于( )mm。
男孩,10个月,生后发现腰部中线处肿物约8cm×6cm×5cm,局部伴毛发增生及
关于特殊人群的权益保障,根据我国有关法律规定,下列说法错误的是()。A.
A.液 B.气 C.血 D.津 E.精布散于皮肤、肌肉和孔窍的是
4岁的男孩小石认为空气没有重量,但经过科学演示后他知道自己错了。他现在认为,空气
(2017年5月)作业组是企业中最基本的协作方式,需要成立作业组的情形包括(
化学结构如下的药物是 A.H受体拮抗剂 B.H受体拮抗剂 C.胃黏膜保
最新回复
(
0
)