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
Most people associate tears with people who are crying because they are upset, angry or extremely happy, but there are actually
Most people associate tears with people who are crying because they are upset, angry or extremely happy, but there are actually
admin
2020-12-02
53
问题
Most people associate tears with people who are crying because they are upset, angry or extremely happy, but there are actually three different kinds of tears.
Firstly there are basal tears.These are tears regularly produced by the tear glands which are above your eyes, under the eyelids and protect the eyes by keeping them clean and wet.Basal tears are spread evenly over the eye by blinking.They are made up of a mixture of water, oil and mucus (粘液).
But there are other tears which have no connection with emotions either.These tears also protect the eyes.So how are they different? The second kind of tears are called reflex tears and their job is to wash out.foreign objects that come into contact with the eye—when an eyelash or an insect gets stuck in your eye, for example.Reflex tears can also be caused by the smell of onions or smoke, which contain chemicals and tiny particles.In addition, cold air or wind, which dries out the eyes, causes the tear glands to produce reflex tears.In English we often say our eyes are "watering" when this happens.
And then there are "real" tears—emotional tears.They are produced by emotional stress or pain and have been found to contain more hormones than other types of tears.Most mammals produce basal or reflex tears, but we humans produce emotional tears.
Emotional tears and reflex tears also come from the tear glands.Some of the tears drain away through the tear ducts in the corner of your eyes.But when too many tears are produced, they roll down your face.Your tear ducts are also connected to your nose, which is why tears sometimes run down into it.Both reflex tears and emotional tears are more watery than basal tears.
What, is the function of emotional tears? Studies indicate that our bodies use them as a way of re-establishing balance of the nervous system.They are a way for us to calm down after a period of stress.Research across cultures also indicates that emotional tears help people to establish a bond with people they care for.Tears express vulnerability and most people react with sympathy to tears.
选项
答案
a mixture
解析
文章第二段末句提到,基底泪由水、油和粘液组成。故填入“a mixture”。
转载请注明原文地址:https://kaotiyun.com/show/yajK777K
本试题收录于:
D类竞赛(专科)题库大学生英语竞赛(NECCS)分类
0
D类竞赛(专科)
大学生英语竞赛(NECCS)
相关试题推荐
A.becauseB.experienceC.pushedintoD.objectionsE.protestedF.complaintsG.oppose
A.acceptB.unquantafiableC.useD.whatE.purchasedF.consumedG.encouraged
A.swallowB.allowC.omittedD.forcedE.urgentlyF.cookedG.refusesH.likely
A.butB.directC.fluentD.surveysE.subtleF.answeredG.dazzleH.abilities
(1)IsitanywonderthatAmericaisalsoacountryofdangerouslyoverweightpeople?(2)AccordingtoarecentstudybytheN
PassageOneWhatdidtheprofessoradvicethestudentstodobygivingthelecture?
(1)Theymaybejustpassingyouroffice,computerbagslungoveroneshoulder.Ortheymaybesittinginacaroutsideit,casua
PassageTwoWhotendtohaveabetter-defineddresscodeintheworkplace.’
(1)Theinternationalspacestationisgettinganew,inflatableroomthatresemblesagiantsparetire,NASAannouncedonWedne
Dannyleftthis________messageonmyansweringmachine:"Imustseeyou.Meetmeattwelveo’clock."Didhemeannoonormidni
随机试题
影响利润率高低的因素有哪些?
男性6岁,在家长未注意时,被铡刀将左手切断,经断肢再植后,左手功能恢复,属于完全再生的组织是
报关员代表所属企业向海关办理报关业务时,应履行的义务包括()。
产权转移书据、借款合同的印花税税率分别为()。
行政领导者的产生方式有()。
所有的艺术创作,开拓的都是一个艺术的空间;而艺术的空间说到底是一个想象的空间。想象空问不同于现实空间,但又是以现实空问为基础的。这里有两层意思:一是说,艺术家若没有对现实空间的感受,就不可能产生艺术的想象,就不可能开拓出想象空间来。一个自幼目盲的人,是不
理想是多方面和多类型的,根据不同的标准和依据,可划分为不同的类型。其中生活理想、职业理想、道德理想和政治理想的区分依据是
Exceptionalchildrenaredifferentinsomesignificantwayfromothersofthesameage.Forthesechildrentodeveloptheirfull
ANiceCupofTeaTheLegendaryOriginsofTeaA)ThestoryofteabeganinancientChinaover5,000yearsago.Accordingto
QuestionsontheOriginsofChristmas1.WhydowecelebrateonDecember25th?A)TheBiblemakesnomentionofJesusb
最新回复
(
0
)