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
2023-11-16
53
管理
问题
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals,【31】this is largely because,【32】animals, we stand upright. This means that our noses are【33】to perceiving those smells which float through the air,【34】the majority of smells which stick to surfaces. In fact,【35】, we are extremely sensitive to smells,【36】we do not generally realize it. Our noses are capable of【37】human smells even when these are【38】to far below one part in one million.
Strangely, some people find that they can smell one type of flower but not another,【39】others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate【40】smell receptors in the nose. These receptors are the cells which sense smells and send【41】to the brain. However, it has been found that even people insensitive to a certain smell【42】can suddenly become sensitive to it when【43】to it often enough.
The explanation for insensitivity to smell seems to be that the brain finds it【44】to keep all smell receptors working all the time but can【45】new receptors if necessary. This may【46】explain why we are not usually sensitive to our own smells—we simply do not need to be. We are not【47】of the usual smell of our own house, but we【48】new smells when we visit someone else’s. The brain finds it best to keep smell receptors【49】for unfamiliar and emergency signals【50】the smell of smoke, which might indicate the danger of fire. [br]
选项
A、still
B、also
C、otherwise
D、nevertheless
答案
B
解析
上文中提到explanation,此处空格后又出现explain,这显然是一种并列或递进关系,只有also符合题意,其他三个选项均表示转折关系。
转载请注明原文地址:http://tihaiku.com/zcyy/3192971.html
相关试题推荐
Lastweekthepresidentofthecompanyheldaparty,butpeoplethoughtitagre
Chomsky’sbookontherelationbetweenlanguageandthoughtis______Psychology
ScientistshadthoughtpeoplebeganmanipulatingfiretocreatetoolsinEur
ScientistshadthoughtpeoplebeganmanipulatingfiretocreatetoolsinEur
ScientistshadthoughtpeoplebeganmanipulatingfiretocreatetoolsinEur
ScientistshadthoughtpeoplebeganmanipulatingfiretocreatetoolsinEur
ScientistshadthoughtpeoplebeganmanipulatingfiretocreatetoolsinEur
ScientistshadthoughtpeoplebeganmanipulatingfiretocreatetoolsinEur
ScientistshadthoughtpeoplebeganmanipulatingfiretocreatetoolsinEur
ScientistshadthoughtpeoplebeganmanipulatingfiretocreatetoolsinEur
随机试题
Inwhichofthefollowingfactorsdoestheweatheroftonightandthatoftomorr
[originaltext]M:Ihavebeenstudyingtoomuchandneedachange.SoI’vejust
糖皮质激素抗炎的作用机理是()A.抑制巨噬细胞中一氧化氮合成酶 B.提高中
儿童心理发展年龄特征的稳定性都是相对的,而不是绝对的。()
绘画、雕塑、工艺美术属于艺术形态感知方式中的()。A.视觉艺术 B.听觉艺
认真贯彻《国防教育法》,必须() A、深入开展以爱国主义为核心的国防教育
患儿,男,5岁。因发热、咽痛、呼吸困难2天入院,查体:体温38.6℃,脉搏100
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
明末,把西方科技介绍到中国来的是( )。A.徐光启、顾炎武 B.黄宗羲、顾炎武
精神科临床上常见的感觉障碍不包括A.感觉过敏 B.内感性不适 C.感觉减退
最新回复
(
0
)