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
专升本
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals,【56】this is larg
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals,【56】this is larg
admin
2011-01-24
52
问题
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals,【56】this is largely because,【57】animals, we stand upright. This means that our noses are【58】to perceiving those smells which float through the air,【59】the majority of smells which stick to surfaces. In fact【60】, we are extremely sensitive to smells,【61】we do not generally realize it. Our noses are capable of【62】human smells even when these are【63】to far below one part in one million.
Strangely, some people find that they can smell one type of flower but not another,【64】others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate【65】smell receptors in the nose. These receptors are the cells which, sense smells and send【66】to the brain. However, it has been found that even people insensitive to a certain smell【67】can suddenly become sensitive to it when【68】to it often enough. The explanation for insensitivity to smell seems to be that brain finds it【69】to keep all smell receptors working all the time but can【70】new receptors if necessary. This may【71】explain why we are not usually sensitive to our own smells. We simply do not need to be. We are not【72】of the usual smell of our own house but we【73】new smells when we visit someone else’s. The brain finds it best to keep smell receptors【74】for unfamiliar and emergency signals【75】the smell of smoke, which might indicate the danger of fire.
选项
A、diluted
B、dissolved
C、determining
D、diffused
答案
A
解析
词义辨析题,上下文题。dilute:稀释,唯一切题的选择,因为下文讲到了百万分之一;dissolve:溶解;diffuse:(气体或液体)扩散。
转载请注明原文地址:https://kaotiyun.com/show/yhGC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Fewofusthoughtthattheproblemwasworth______.
Hethoughtthatthebadworkingconditionswouldresultinthestrikeoftheworkers.
Whileactingmayruninthefamily,itwasn’tAngelinaJolie’sonlychoicewhenshethoughtaboutherfuturecareer.AlthoughJo
(71)Expertshavelongthoughtthatdepressioncouldbebadforyourheart.Anewstudydemonstratesjusthowdangerousitcanb
Oncesomebodythoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautomob
Oncesomebodythoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautomob
Howwelldoyouknowyourdog?Theansweris,notnearlyaswellasyourdogknowsyou.Giventherightmotivation,humanscanc
随机试题
下列选项中,属于无形资产的是()。
合成VLDL的场所主要是在
城市工程管线综合规划中,下列哪项做法是正确的?
在FIDIC施工合同条件中,颁发履约证书是表示( )。
2002年4月5日,某建筑公司致函某水泥厂,欲订购1000吨,并提供了规格、单价,询问是否同意。同月同日,该水泥厂也致函该建筑公司,表示现有1000吨同规格的水泥;询问建筑公司是否可以接受。双方收信后,均末给对方回复。4个月后,该水泥厂向该建筑公司发货,建
社会保障制度主要是要满足人们的()。
2012年,我国电子信息产品进出口呈小幅增长态势,进出口总额11868亿美元,增长5.1%,增速比上年回落6.4个百分点,低于全国商品外贸总额增速1.1个百分点,占全国外贸总额的30.7%。其中,出口6980亿美元,增长5.6%,增速比上年回落6.3个百分
(复旦大学2017)假设无风险收益Rf=5%,投资人最优风险资产组合的预期收益E(Rt)=15%,标准差为25%,试求:假设投资人需要构造标准差为10%的投资组合,则投资最优风险组合的比例是多少?构造的投资组合预期收益率是多少?
甲、乙两船驶向不能同时停靠两条船的码头,它们一天到达时间是等可能的,如果甲停靠,则停靠的时间为1小时,若乙停靠。则停靠的时间为2小时,求它们不需要等候的概率.
Decidingonthevacation’sdestination(目的地)withyourfamilycanbeadifficulttask,especiallywhenyourchoiceofplacedoesn
最新回复
(
0
)