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
29
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.
【C7】
选项
A、subjected
B、left
C、drawn
D、exposed
答案
D
解析
本题是接触到某种气味,固定搭配exposed to表“接触”。因此,D为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/HtT3777K
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
Althoughspeechandwritingarethespecialmeansofcommunicatingofhumans,theinterchangealsotakesplaceinmanyotherway
Henevergavemuchthoughttotheadditionalkilogramshehad______lately.
A、Theythoughtit’simpossible.B、Theythoughtthenurse’sideawasright.C、Theyshowednoattitude.D、Theywerenotsurewhet
Howmuchpaindoanimalsfeel?Thisisaquestionwhichhascausedendlesscontroversy.Opponentsofbiggameshooting,forexam
Howmuchpaindoanimalsfeel?Thisisaquestionwhichhascausedendlesscontroversy.Opponentsofbiggameshooting,forexam
随机试题
材料按实际成本核算时,应设置的账户有()。
患者,男性,39岁,出现口腔溃疡1周,经检查舌背有一钱币大小的孤立溃疡,表面有棕色薄痂,触之有软骨样感觉。患者承认与另一梅毒患者有性接触史。临床症状为
流行性脑脊髓膜炎患者在败血症期会出现皮肤黏膜病变,典型的变化是
依据不同的分类标准,定金合同属于()。
“经营单位”栏应填;“总价”栏应填:
2001年,全国基础教育工作会议旗帜鲜明地把课程改革作为一项政府行为,明确了基础教育对促进社会主义现代化建设具有的作用是()
某农牧区由于长期滥垦草原、超载放牧,不仅没有改变经济落后的面貌,反而导致自然环境的严重破坏,不仅没有改变经济落后的社会面貌,反而导致自然环境的严重破坏,草原承载力急剧下降。践行科学发展观以来,农牧民改变以往的经济发展方式,根据当地自然条件种植沙柳资源林,大
基尼系数,是衡量分配不平等程度的重要指标。国际上通常认为,当基尼系数低于0.2表示收入绝对平均;0.3-0.4表示相对合理;0.4-0.5表示收入差距较大;0.6以上表示收入差距悬殊。下列选项中,有关基尼系数说法不正确的是()。
红军长征胜利的意义主要有
单击“字处理”按钮,然后按照题目要求完成下面的操作。注意:以下的文件必须保存在考生文件夹下。某高校学生会计划举办一场“大学生网络创业交流会”的活动,拟邀请部分专家和老师给在校学生进行演讲。因此,校学生会外联部需制作一批邀请函,并分别递送
最新回复
(
0
)