首页
登录
职称英语
Most people associate tears with people who are crying because they are up
Most people associate tears with people who are crying because they are up
游客
2023-10-19
16
管理
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.
[br]
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://www.tihaiku.com/zcyy/3112641.html
相关试题推荐
Thelocalauthoritiesrealizedtheneedtomake________forelderlypeopleint
Withpermanentresidencestatus,peoplecanenterandleavethecountryusingon
________stormswreakedhavoconthearea,leavingthreepeopledeadanddozensi
Becausefilmis________tolightitmustbekeptindarknesstoavoidexposureun
Thelocalpeoplecouldhardlythinkofanygoodwayto________disasterofthewa
"Lookatthoseprettygirls’skirts"is________,becauseitisnotclearwhether
"Theywereamusedbytheclumsypanda’smovement"is________,becauseitisnot
—________allthreepeopleinthecarinjuredintheaccident?—No,________only
Smokingissoharmfultopersonalhealththatitkills________peopleeachyeart
TheNortheast,with60millionpeople,isthemost________populatedpartofthe
随机试题
[originaltext]Moderator:HelloLadiesandGentlemen,itgivesmegreatplea
OfalltheemployedworkersintheUnitedStates,12.5millionarepartofa
[originaltext]M:Areyouenjoyingthistour?W:Yes.It’smyfirsttimetovisi
建筑立面图绘制步骤应为()。A.先定室外地坪线、外墙轮廓线和屋面檐口线 B.
锁喉痈治疗的方药是A.普济消毒饮 B.五神汤合萆薢渗湿汤 C.仙方活命饮
A.0 B.1 C.2 D.3
在历史文化名镇、名村保护范围内严格禁止的活动是()。A.在核心保护范围内进行
社会工作者小刘为老年人开设了园艺小组,旨在加强老年人之间的沟通交流,增强老年人的
数据统计分组时,习惯规定()。A.包括上限,不包括下限 B.不包括上限,
直角刚杆OAB可绕固定轴O在图示平面内转动,己知OA=40cm,AB=30
最新回复
(
0
)