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
外语
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
2014-12-18
62
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
【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://kaotiyun.com/show/Pvm7777K
0
大学英语六级
相关试题推荐
"Advertisinghasn’tchangedsincethe1960s,"saysRosenblum,thecofounderofa50-personagencycalledQuestusthatspecialize
ReturningtoScienceA)TeresaGarrettwasworkingpart-timeasabiochemistrypostdoc(博士后).Shehadaninfantathome,andshew
ReturningtoScienceA)TeresaGarrettwasworkingpart-timeasabiochemistrypostdoc(博士后).Shehadaninfantathome,andshew
Forthispart,youareallowed30minutestowriteanessaycommentingontheremark"Earthprovidesenoughtosatisfyeveryman
AnewstudysaysancientsnowontopofMountKilimanjaroinTanzaniacouldbegoneinabout20years.Hugelayersoficeformed
A、PostinghomemadevideooraudioontheInternet.B、SpecializinginmouthingBackstreetBoys’songs.C、Makingaudioorvideoin
Ahappymarriageapparentlyisgoodmedicine,buthostilespousesmaybeharmfultooneanother’shealth.Couplesin【B1】______m
A、Aprofessionalwindowcleaner.B、Automotivesalesperson.C、Servicestationattendant.D、Grocerystoremanager.C预读选项可判断,本题是身份关
A、HecannotappreciatethePicassoexhibition.B、EvenhisnephewcandrawaswellasPicasso.C、Heisnotquiteimpressedwithm
随机试题
肾脏移植患者应采取
钩藤入煎剂的正确方法是
不符合小儿呼吸系统生理特点的是()
整平经纬仪的目的是为了使()。
实现建设项目质量、进度和成本控制的关键是()。
下列关于保险金额和保险价值,正确的表述是()。
位于市区的某自营出口生产企业,2011年6月增值税应纳税额为-280万元,出口货物的“免抵退”税额为400万元;企业将其自行研发的动力节约技术转让给一家科技开发公司,获得转让收入80万元。下列各项中,符合税法相关规定的有()。
设函数f(x)在(一∞,+∞)内二阶可导,且f(x)和f"(x)在(一∞,+∞)内有界,证明:f’(x)在(一∞,+∞)内有界.
下列删除VLAN的命令中,无法执行的是()。
在窗体上画两个文本框Text1和Text2,一个命令按钮Command1,请阅读以下程序段:PrivateSubCommand1_Click()x=0DoUntilx>=50x=(x+4)*(x+3)n=n+1
最新回复
(
0
)