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
外语
A. limited B. distinguish C. unlike D. particular E. trigger F. inefficient G. create H. emergency
A. limited B. distinguish C. unlike D. particular E. trigger F. inefficient G. create H. emergency
admin
2017-10-17
72
问题
A. limited B. distinguish C. unlike D. particular E. trigger
F. inefficient G. create H. emergency I. incompetent J. detecting
K. aware L. messages M. unusual N. surfaces O. confined
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 【C3】______. In fact, though, we are extremely sensitive to smells, even if we do not generally realize it. Our noses are capable of 【C4】______ 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 【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 exposed 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 【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 available for unfamiliar and 【C10】______ signals such as the smell of smoke, which might indicate the danger of fire.
【C7】
选项
答案
F
解析
由find it a. to do sth. 结构可知,此处填入形容词。此处所填的形容词用于修饰空格后的to keep all smell receptors working all the time。结合下文提到的大脑觉得最好(finds it best)让气味感受器在出现陌生信号时有效地工作,由此可推断空格处是要说明让所有感受器一直工作会“效率低”。inefficient“效率低的;无效率的”符合题意。incompetent“不能胜任的”用于修饰人,不符合语义。
转载请注明原文地址:https://kaotiyun.com/show/UjDK777K
0
专业英语四级
相关试题推荐
HowwouldsomeEasternAsiansstarttheirconversationwhentheymeetforthefirsttimeaccordingtothepassage?
PASSAGETHREEWhatdothecompanies’effortstokeeppersonalinformationprivateseemtobe?
Mostpeopleknowthatalotisridingontheircreditscore,fromtheinterestratesyoupayonyourloans,toyourabilitytor
RedNoseDayRedNoseDayisawell-knowneventinBritain./TheaimistoraisemoneyforacharitycalledComicRelief/
TreesTreesaretheoldestlivingorganismsonearth./Thegreatageoftreesmakesthemusefulforallsortsofscientific
A、Fouryearsago.B、Tenyearsago.C、Fiveyearsago.D、Eightyearsago.C本题考查时间。由句(9)可知,Alex提到五年前他还没有使用Facebook时的情况,故C为答案。
TheFreeHugsCampaignTheFreeHugsCampaignisasocialmovement/involvingindividualswhoofferhugstostrangersinpub
ThemysteryoftheexpansionofseaicearoundAntarctica,atthesametimeasglobalwarmingismeltingswathsofArcticseaic
The_____crownjewelsarekeptintheTowerofLondon.
Twomenhavedenied_____murderingawomanataremotepicnicspot.
随机试题
下列适用《合同法》的有()
机械性肠梗阻的声像图特征包括
患者,女,23岁。2周来右上后牙遇冷热过敏。检查:发现6DO深龋,探之未穿髓,病变组织颜色较浅,易剔除。在做鉴别诊断时比较有价值的检查方法是
在药品价格管理中.医疗机构必须执行并不得擅自提高价格的药品是
当事人可以用书面协议选择管辖法院的纠纷是()。
在施工成本分析的方法中,( )是通过技术经济指标的对比检查目标的完成情况,分析产生差异的原因,进而挖掘出内部潜力的方法。
基金性质的机构投资者,包括()。
理财收入占比越大,说明家庭对工作收入的依赖越低;工作收入的占比越大,说明家庭对工作收入的依赖性就越大。()
关于社会保险,下列说法正确的有()。
电子政务对于纸张相当于()对于()
最新回复
(
0
)