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
40
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] 【C5】
选项
答案
L
解析
空格所在句是which引导的定语从句,填人的词作send的宾语。messages指“信息”,这里指感受器把信息传给大脑.符合句子逻辑。impulses多表示人的冲动或兴奋,用在此处不合适。
转载请注明原文地址:https://tihaiku.com/zcyy/2951579.html
相关试题推荐
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
随机试题
Onceuponatime,peoplewholivedalonetendedtobethoseoneitherside
IntheruinsofthePalmBeachHotelyougetapowerfulsensethatanerais
TheGrowingBacklashAgainstOverparentingWhatparentingha
简述利用计算机查询服务的工作程序。
高频保护不应该反映被保护输电线路范围以外的故障,故可以不带动作延时。
下列施工组织方法中,属于不常用的是()。A.依次施工 B.平行施工 C.流
女性,58岁,间歇无痛肉眼血尿2个月余。查体未发现异常。肾脏B超提示右肾中下极4
A.复元活血汤 B.血府逐瘀汤 C.少腹逐瘀汤 D.通窍活血汤 E.膈下
护士挤压胸腔引流管的目的是A.防止引流管打折 B.重建胸腔负压 C.保持引流
肝硬化最突出的临床表现是( )。A.恶心、呕吐 B.上消化道出血 C.脾大
最新回复
(
0
)