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
考研
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, 【B1】______this
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, 【B1】______this
admin
2019-05-25
74
问题
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, 【B1】______this is largely because, 【B2】______animals, we stand upright. This means that our noses are【B3】______to perceiving those smells which float through the air,【B4】______the majority of smells which stick to surfaces. In fact,【B5】______, we are extremely sensitive to smells, 【B6】______we do not generally realize it. Our noses are capable of 【B7】______human smells even when these are【B8】______to far below one part in one million.
Strangely, some people find that they can smell one type of flower but not another, 【B9】______others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate【B10】______smell receptors in the nose. These receptors are the cells which sense smells and send【B11】______to the brain. However, it has been found that even people insensitive to a certain smell【B12】______can suddenly become sensitive to it when【B13】______to it often enough.
The explanation for insensitivity to smell seems to be that the brain finds it【B14】______to keep all smell receptors working all the time but can【B15】______new receptors if necessary. This may【B16】______explain why we are not usually sensitive to our own smells—we simply do not need to be. We are not【B17】______of the usual smell of our own house, but we【B18】______new smells when we visit someone else’ s. The brain finds it best to keep smell receptors【B19】______for unfamiliar and emergency signals【B20】______the smell of smoke, which might indicate the danger of fire.
【B10】
选项
A、unusual
B、particular
C、unique
D、typical
答案
B
解析
考查形容词辨析。空格所在句的含义为“这可能是因为有些人缺乏能在鼻子里产生的以下的20个嗅觉感受器的必要基因”。由文意可知,这句话是对上一句话的解释,即一些人闻不到另一种花的气味是因为他们不具备必要的基因。由此可推知,这种嗅觉感受器是“特定的”,故选B.particular。
转载请注明原文地址:https://kaotiyun.com/show/aonZ777K
0
考研英语一
相关试题推荐
Youngpeoplealwayssufferinrecessions.Employersstop【C1】______thembecausetheyareeasiertosack.Butin【C2】______episodes
Youngpeoplealwayssufferinrecessions.Employersstop【C1】______thembecausetheyareeasiertosack.Butin【C2】______episodes
People’sfinancialhistoryhasastrongimpactontheirtasteforrisk.LookingatsurveysofAmericanhousehold【C1】______from1
People’sfinancialhistoryhasastrongimpactontheirtasteforrisk.LookingatsurveysofAmericanhousehold【C1】______from1
People’sfinancialhistoryhasastrongimpactontheirtasteforrisk.LookingatsurveysofAmericanhousehold【C1】______from1
Whenprehistoricmanarrivedinnewpartsoftheworld,somethingstrangehappenedtothelargeanimals:theysuddenlybecameex
Telecommuting,Internetshoppingandonlinemeetingsmaysaveenergyascomparedwithin-personalternatives,butasthedigital
AlthoughConsumersUnionconcedesthat"noconfirmedcasesofharmtohumansfrommanufacturednanoparticleshavebeenreported"
AlthoughConsumersUnionconcedesthat"noconfirmedcasesofharmtohumansfrommanufacturednanoparticleshavebeenreported"
随机试题
某孕妇,30岁,G1P0,孕37周,羊水过多,行羊膜腔穿刺术后,为该孕妇腹部放置沙袋的目的是
金融机构在银行间市场发行金融债必须获得()的行政许可。
下列选项正确的是()。
论述应当怎样培养与激发学生的学习动机。
通过WindowsXP的“显示属性”对话框,不可以设置的是()。
84.78元、59.50元、121.61元、12.43元、66.50元的总和是()元。
被日本称为“海上生命线”的海峡是:
有α.β=2成立(1)(α一1)(β一2)=0(2)α、β是方程的两个实根
A.条件(1)充分,但条件(2)不充分B.条件(2)充分,但条件(1)不充分C.条件(1)和条件(2)单独都不充分,但条件(1)和条件(2)联合起来充分D.条件(1)充分,条件(2)也充分E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2
Urban______couldnodoubtberelievedsomewhatbyareductioninpublictransportfares.
最新回复
(
0
)