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
2023-08-15
46
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 E) permanently I) dedicated M) distinguishing
B) emergency F) limited J) exposed N) particular
C) aware G) sure K) impulses 0) extremely
D) detecting H) inefficient L) messages [br] 【C5】
选项
答案
L
解析
空格所在句是which引导的定语从句,填入的词作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/2928088.html
相关试题推荐
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Thehumannoseisanunderratedtool.Humansareoftenthoughttobeinsensi
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
Researchonanimalintelligencealwaysmakesuswonderjusthowsmarthumans
随机试题
[originaltext]INTERVIEWER:Onthematterofcareers,alotofthejobsthatpeo
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsu
(79)Inwhatnowseemsliketheprehistorictimesofcomputerhistory,theea
关于风险的叙述中,不正确的是()。A.风险是可能会发生的事 B.风险会给项目
A.茯苓 B.乌贼骨 C.陈皮 D.龙骨 E.赤石脂滑脱诸证
网型代号Ww代表()A.钢板网型 B.编织网型 C.焊接网型 D.刺钢丝型
依据是否以当事人的意志为转移,劳动法律事实可分为劳动法律行为和()。A:劳动法律
2013年12月召开的中央城镇化工作会议指出,走中国特色、科学发展的新型城镇化道
下列关于票据的写法中,正确的是()。A.出票日期为:贰零零柒年零壹月壹拾伍日
年轻女性患者,间歇血尿半年。查体:BP?114/72?mmHg,咽红,扁桃体Ⅱ度
最新回复
(
0
)