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
59
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://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
Whentheyadviseyourkidsto"getaneducation"ifyouwanttoraiseyouri
Weareenteringaperiodinwhichrapidpopulationgrowth,thepresenceofd
云锦(cloud—patternbrocade)是我国优秀传统文化的杰出代表,由于用料考究、织工精细、图案色彩典雅富丽,宛如天上彩云般的瑰丽,故称“云
屈原是中国最早的浪漫主义诗人,是楚国大夫。为了抵御强秦,他提议与齐国结盟。但因奸臣诽谤(slander),他被免职、流放。怀着对国家和人民的满腔热忱,他创作了许
A.40MPa B.60MPa C.50MPa D.20MPa
乳突手术时确定鼓窦位置的重要标志是()A.鼓乳裂 B.道上三角区
下列需要申领施工许可证的是( )。A.开工报告已获得批复 B.某工厂建设食堂
Thechangeinthatvillagewasmiraculou
张华,女,44岁,有一个正在本地读大学一年级的女儿,丈夫在女儿幼年时就因病去世。
ABC会计师事务所的A注册会计师负责审计上市公司甲公司2013年度财务报表。下列
最新回复
(
0
)