首页
登录
职称英语
A. limited B. distinguish C. unlike D. particular
A. limited B. distinguish C. unlike D. particular
游客
2024-08-31
9
管理
问题
A. limited B. distinguish C. unlike D. particular E. trigger
F. inefficient G. create H. emergency I. incompetent J. detecting
K. aware L. messages M. unusual N. surfaces O. confined
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【C3】________. In fact, though, we are extremely sensitive to smells, even if we do not generally realize it. Our noses are capable of【C4】________ 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【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 exposed 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【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 available for unfamiliar and【C10】________ signals such as the smell of smoke, which might indicate the danger of fire. [br] 【C3】
选项
答案
N
解析
空格前的stick to表明,此处填入名词。本句说明的是人类的鼻子能够感受到的和不能闻到的气味,由此可推断此处填入的词要与前面的float through the air相反。surface“表面”符合语义。
转载请注明原文地址:https://tihaiku.com/zcyy/3737824.html
相关试题推荐
[A]menu[B]access[C]ineffective[D]enhanced[E]routine[F]particularly[G]co
[A]menu[B]access[C]ineffective[D]enhanced[E]routine[F]particularly[G]co
[A]menu[B]access[C]ineffective[D]enhanced[E]routine[F]particularly[G]co
[A]menu[B]access[C]ineffective[D]enhanced[E]routine[F]particularly[G]co
[A]menu[B]access[C]ineffective[D]enhanced[E]routine[F]particularly[G]co
A.whatB.deserveC.turningintoD.unlikeE.virtuallyF.endangered
A.whatB.deserveC.turningintoD.unlikeE.virtuallyF.endangered
A.whatB.deserveC.turningintoD.unlikeE.virtuallyF.endangered
A.whatB.deserveC.turningintoD.unlikeE.virtuallyF.endangered
A.whatB.deserveC.turningintoD.unlikeE.virtuallyF.endangered
随机试题
IntotheUnknownA)Theworl
汇集某一学科(专业领域)或若干学科(专业领域)的基本知识、参考资料和数据,供随时
A.利福平 B.对氨基水杨酸 C.链霉素 D.氨硫尿 E.吡嗪酰胺对细胞
1982年1月,中国国际信托投资公司在()资本市场上发行了武士债券。A.德国法兰
下列测量方法中,最适合测绘建筑物立面图的是( )。A.三角高程测量 B.地面
自来水收费标准为,每户每月用水5吨以下为2.2元/吨,超过5吨时,超出部分为3.
可比实例所处的地区应与估价对象所处的地区完全相同。()
关于腮腺多形性腺瘤手术的叙述,错误的是A.肿瘤在深叶时,将肿瘤连同全腮腺切除术
根据民事法律制度的规定,下列情形中,可导致诉讼时效中止的是( )。A.债权人向
女性,36岁。4个月来腹痛、腹泻,大便4~5次/日,为稀便,有时有黏液及少量血,
最新回复
(
0
)