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
2024-04-11
10
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] 【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/3550107.html
相关试题推荐
GeorgeHerbertMeadsaidthathumansaretalkedintohumanity.Hemeantthat
GeorgeHerbertMeadsaidthathumansaretalkedintohumanity.Hemeantthat
GeorgeHerbertMeadsaidthathumansaretalkedintohumanity.Hemeantthat
GeorgeHerbertMeadsaidthathumansaretalkedintohumanity.Hemeantthat
GeorgeHerbertMeadsaidthathumansaretalkedintohumanity.Hemeantthat
GeorgeHerbertMeadsaidthathumansaretalkedintohumanity.Hemeantthat
[originaltext]W:Goodmorning,class.TodayIthoughtwewouldtalkaboutsomet
[originaltext]W:Goodmorning,class.TodayIthoughtwewouldtalkaboutsomet
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstresssee
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstresssee
随机试题
TheOnlyChild;RevealingtheMythsAccordingtotheGut
Manypeopleoftenenjoyeatingout【C1】______beforeorafteravisittothet
[originaltext]W:Hi,I’mnewhere,andIwaswonderinghowIcouldgetalibrar
下列级数中发散的是( )。
患者,女性,28岁,已婚,未生育。以"停经2个月,阴道少量流血伴阵发性下腹痛5天
X连锁遗传的特点为A、同胞中1/4将会患病 B、子代中将有1/2概率患病 C
左边给定的是纸盒的外表面,下面哪一项能由它折叠而成? A.如上图所示 B
239.在进行解、并列操作前后,对检查相关电源运行及负荷分配情况应写入操作票。
( )不是联合国安理会常任理事国。A.中国 B.英国 C.法国 D.德国
古典时期城市生活的核心是()。A.市场厅 B.露天剧院 C.广场 D.
最新回复
(
0
)