首页
登录
职称英语
The human nose is an underrated tool. Humans are often thought to be insensi
The human nose is an underrated tool. Humans are often thought to be insensi
游客
2023-08-23
26
管理
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 [br] 【C7】
选项
答案
H
解析
这里是“主语+find+it+a.+不定式”的句式,故空格应填人形容词。that从句解释了“对气味不敏感”的原因。词库中只有inefficient符合句意,表明“对气味不敏感的原因是:大脑发现让所有的气味感受器一直处于运转状态效率太低”。
转载请注明原文地址:https://tihaiku.com/zcyy/2951581.html
相关试题推荐
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
随机试题
歌谣(ballads)跟口头流传的神话,远在文字出现之前就已大量产生。中国的文学正是发端于此。不过歌谣本是人们在生活中随兴而发的(improvised)东
In1932,______thedepression,theAmericanpeoplechoseFranklinD.Roosevelt
关于上海银行间同业拆放利率,不正确的表述是()。A.是一种算数平均利率 B.
影响资产净利率高低的因素主要有(), Ⅰ.产品的价格 Ⅱ.单位成本的高低
特种设备()过程的监督检验、特种设备安全监督管理部门实施的安全监察是特种设备安全
患者,42岁,近几年来经量增多,经期延长。近2~3个月常感头晕、乏力。妇科检查:
关于急性炎症性脱髓鞘性多发性神经病脑脊液检查的特征,正确的是A、蛋白增高,细胞数
2020年,全国软件和信息技术服务业(即软件业)企业超4万家,累计完成软件业务收
苔黄而干涩,中有裂纹如花瓣形,称为A.霉腐苔 B.黏腻苔 C.黄瓣苔 D.
南岳公司委托江北造船公司建造船舶一艘。船舶交付使用时南岳公司尚欠江北公司费用20
最新回复
(
0
)