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
2023-08-23
50
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] 【C7】
选项
答案
H
解析
这里是“主语+find+it+a.+不定式”的句式,故空格应填人形容词。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/2951581.html
相关试题推荐
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
随机试题
Whataretheytalkingabout?[originaltext]W:What’sforbreakfast,Dad?M:Bre
Whenyourbatteryliferunsdownattheendoftheday,youfeelthatyoursisr
各类残疾程度分级标准为()A.残疾一级为极重度 B.残疾二级为重度
男,7岁,数周来大便带鲜血,量少。血附于正常粪便之上。应首选的检查是()
()作为商业银行的重要“无形资产”,必须设置严格的安全保障,确保能够长期、不间断
32.若需变更或增设安全措施者应填用,并重新履行签发许可手
脑为A.髓海 B.玄府 C.血府 D.孤府
下列学者观点与其代表的哲学派别对应正确的一项是()。A.泰利斯:万物产生于水——
期货交易所、期货经纪公司的从业人员,期货业协会或者证券期货监督管理部门的工作人员
A.河北 B.河南 C.四川 D.福建 E.浙江地黄的主产地是
最新回复
(
0
)