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
2023-08-17
82
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] 【C7】
选项
答案
H
解析
这里是“主语+find+it+a.+不定式”的句式,故空格应填入形容词。that从句解释了“对气味不敏感”的原因。词库中只有inefficient符合句意,表明“对气味不敏感的原因是:大脑发现让所有的气味感受器一直处于运转状态效率太低”。
转载请注明原文地址:https://tihaiku.com/zcyy/2933845.html
相关试题推荐
[originaltext]Inthenot-sodistantpast,mostpeoplethoughtthatwhenaw
[originaltext]Inthenot-sodistantpast,mostpeoplethoughtthatwhenaw
Rainforestsmaystoremuchlesscarbonthanwethought.Itcouldbetimeto
Rainforestsmaystoremuchlesscarbonthanwethought.Itcouldbetimeto
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]W:Goodmorning,class.TodayIthoughtwewouldtalkaboutsomet
随机试题
HowtoWriteaCollegeTermPaper?I.Tip1:Figureoutexactlywhattheprofess
A.对外做功和吸热都相同 B.对外做功和吸热均不相同 C.对外做功相同,但吸
某公司的流动比率是1.9,如果该公司用现金偿还部分应付账款。那么该公司的流动比率
为减少回归因素对评价结果正确性的影响,可采用的方法是A.设立对照组 B.抽样测
红外测温一般检测时环境温度发生较大变化时,应对仪器重新进行()温度校准。内部$;
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
某闭式喷头的玻璃球色标为橙色,则该喷头玻璃球对应的温度为()。A.93℃ B
全域旅游推动全域发展 所谓“全域旅游,是指由原来孤立的点向全社会多领域、综
根据国家相关法律、法规规定,以下说法正确的有()。A.借款人有义务按照借款合同
A.1年 B.2年 C.3年 D.5年麻醉药品、第一类精神药品邮寄证明应保
最新回复
(
0
)