首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
医学
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, but this is lar
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, but this is lar
admin
2018-03-26
52
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,【C1】______animals, we stand upright. This means that our noses are【C2】______to perceiving those smells which float through the air, missing the majority of smells which stick to surfaces. In fact, though, we are extremely sensitive to smells, even if we do not generally realize it. Our noses are capable of【C3】______human smells even when these are【C4】______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【C5】______smell receptors in the nose. These receptors are the cells which sense smells and send【C6】______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【C7】______to it often enough.
The explanation for insensitivity to smell seems to be that brain finds it inefficient to keep all smell receptors working all the time but can【C8】______new receptors if necessary. This may also explain why we are not usually sensitive to our own smells we simply 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【C10】______for unfamiliar and emergency signals such as the smell of smoke, which might indicate the danger of fire.
【C8】
选项
A、introduce
B、summon
C、trigger
D、create
答案
D
解析
此题与上道题关系紧密,本句意为“人类的大脑为了提高其对气味的分辨率,有时会根据情况创造一些新的接收器。”表达“创造,产生”之意的只有选项D。
转载请注明原文地址:https://kaotiyun.com/show/TtT3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
Thetruthmaywellbeself-evidentthatallhumansarecreatedequal,butonethingourMakerdidnotendowuswithequallyist
Althoughspeechandwritingarethespecialmeansofcommunicatingofhumans,theinterchangealsotakesplaceinmanyotherway
Henevergavemuchthoughttotheadditionalkilogramshehad______lately.
A、Alltheinjectionsgiven40yearsagowerecontaminated.B、Thecontaminatedvaccinesmaycausecancerinhumans.C、Vaccinesar
A、Itiseasytotakecareofherthreeteenagerboys.B、Nancy’slifeiseasycomparedwiththewoman’s.C、Nancylivesamored
A、Becausetheyhaveunnoticeablesleepingpatterns.B、Becausetheysleepverylittle.C、Becausetheyareinsensitive.D、Because
Walrusivory,whichtheEskimosusedforweaponsandcarvings,isnowveryscarceduetotheslaughteroftheanimals.
A、Theythoughtit’simpossible.B、Theythoughtthenurse’sideawasright.C、Theyshowednoattitude.D、Theywerenotsurewhet
A、Theyaredangeroustothehealthofanimalsandpeople.B、Theycaninterferewiththeecologicalbalanceoftheenvironment.C
Howmuchpaindoanimalsfeel?Thisisaquestionwhichhascausedendlesscontroversy.Opponentsofbiggameshooting,forexam
随机试题
简述社会文化各要素对市场营销的影响。
A、飞沫传播B、疫水传播C、虫媒传播D、接触传播E、土壤传播流行性出血热是()
内源性哮喘与下列哪些因素有关
下述体层轨迹,滤线栅方位不变的是
症见自觉怕冷,得温可以缓解者,属于
酚醛树脂塑化液第Ⅲ液是
我国《专利法》规定,实用新型和外观设计专利权的保护期限为()年。
注册会计师执行内部控制审计时,下列有关识别重要账户、列报及其相关认定的说法中,错误的是()。
人的动机、兴趣、情感等心理因素,在教育活动中,被称做_________。
互联网发达,有人认为能代替报纸,有人认为不能,你认为呢?
最新回复
(
0
)