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
2017-12-07
93
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 0) extremely
D) detecting H) inefficient L) messages
【C8】
选项
答案
A
解析
空格所在句主谓宾成分齐全,由此判断空格处应填入副词。simply“只不过”放入句中合适,表示“这只是因为我们不需要”。permanently和extremely在语义上说不通。
转载请注明原文地址:https://kaotiyun.com/show/X4U7777K
0
大学英语六级
相关试题推荐
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstressseemstoaffecttheimmunedefensesofloweranimalsto
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstressseemstoaffecttheimmunedefensesofloweranimalsto
Movingfarmorequicklythanmanyhadthoughtlikelyorpossible,lawmakersinthe10-memberHouse-Senatecommitteeannouncedth
Movingfarmorequicklythanmanyhadthoughtlikelyorpossible,lawmakersinthe10-memberHouse-Senatecommitteeannouncedth
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’twanttoburn.Butformarineanimalslikewhales,t
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’twanttoburn.Butformarineanimalslikewhales,t
随机试题
关于急性低氧性呼吸功能障碍的发病机制,描述不正确的是
男性,21岁。最近数月一直耳闻人语声,讲"有人要抓他",为此非常害怕,并称:"家中有窃听器、摄像机监视,马路上有人跟踪,全家被人下毒。"你认为这是什么症状
患者,男性,62岁,癫痫大发作。为防止窒息,应采取的护理措施是()。
厂房内设置丙娄仓库时,必须采用防火墙隔开,正确的是()。
企业关心建设项目的经济分析的原因是()。
根据《中华人民共和国会计法》的规定,对受到打击报复的会计人员应采取的补救措施通常有()。
()是指已在银行办理个人住房贷款的借款人在还款期间,由于所购房屋出售、赠与、继承等原因,房屋产权和按揭借款需同时转让给他人,并由银行为其做贷款转移手续的业务。
李老师在教学生区分形近字“渴”“竭”“碣”“谒”时,将四个字相同的右半部分用白色粉笔写出,相异的左半部分用彩色粉笔标出。李老师运用了知觉的()
WhichcommandsarerequiredtoproperlyconfigurearoutertoproperlyconfigurearoutertorunOSPFandtoaddnetwork192.168
Internet网使用的通信协议是______。
最新回复
(
0
)