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
2023-08-20
39
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 B)emergency C)aware D)detecting
E)permanently F)limited G)sure H)inefficient
I)dedicated J)exposed K)impulses L)messages
M)distinguishing N)particular O)extremely [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”,带人句中表示“我们意识不到我们自己的房子通常的气味”,句意通顺。而sure代人句中则表示“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/2940760.html
相关试题推荐
Theselfishnessofhumansisacentralassumptionoforthodox(传统的)economics,
Theselfishnessofhumansisacentralassumptionoforthodox(传统的)economics,
Theselfishnessofhumansisacentralassumptionoforthodox(传统的)economics,
Theselfishnessofhumansisacentralassumptionoforthodox(传统的)economics,
Theselfishnessofhumansisacentralassumptionoforthodox(传统的)economics,
Theselfishnessofhumansisacentralassumptionoforthodox(传统的)economics,
Theselfishnessofhumansisacentralassumptionoforthodox(传统的)economics,
[originaltext]Dreamsareexpressionsofthoughts,feelingsandeventsthat
[originaltext]W:IthoughtAlexsaidhegotAsinallhistests.M:Laura,you
[originaltext]W:IthoughtAlexsaidhegotAsinallhistests.M:Laura,you
随机试题
(16)______[br](22)______[originaltext]TherearethreeofusinPersonnel
企业理念识别系统,是企业文化在意识形态领域中的再现、主要表现为企业生产经营的战略
行政效率的提高是行政管理体制和机构改革的关键。()
A.AB.BC.CD.D
提高或者降低某地区的城镇土地使用税税额标准需要经过()批准。A.省级人民政府
(2018年5月)绩效考评步骤包括()A.改进绩效的指导 B.评价实施 C
( )是对多个候选厂址进行分析评价的一种常用方法。A.分支界限法 B.重
工业企业的固定成本一般包括()。A:管理人员工资B:利息C:工人工资D:固
A. B. C. D.
最新回复
(
0
)