第三部分阅读理解(共20小题;每小题2分,满分40分)阅读下列短文,从每题所给的四个选项A、B、C和D中,选出最佳选项。Tearsarenature’swayofmakingusfeelmorecomfortable.Whenour
第三部分 阅读理解(共20小题;每小题2分,满分40分)
阅读下列短文,从每题所给的四个选项A、B、C和D中,选出最佳选项。
Tears are nature’s way of making us feel more comfortable. When our eyes are made uncomfortable by some small pieces of pollution or when we are cutting onions or when we are exhausted and “red-eyes” from over work and late hours tears form in our eyes to clean and refresh them.
Tears are also a sign of strong emotion. We cry when we are sad and we cry when we are happy.
And tears seem to be uniquely human. We know that animals also experience emotion--fear pleasure loneliness but they do not shed (流) tears.
Biologically speaking tears are actually drops of saline fluid which is a little bit salty produced by a gland (腺) in the body. Because salt is an important component tears may actually constitute the most conclusive evidence that the human animal is the end product of a long evolutionary process that began in the sea.
And it is clear that in addition to the emotional benefits the shedding of tears has a specific biological function as well. Through tears we can eliminate from our body certain chemicals which build up in response to stress and create a chemical imbalance in the body. Crying actually makes us feel better by correcting that imbalance and making us feel good again. And thus the emotional and the biological functions of tears merge (合并) into one and make us even more “human” than we would otherwise be.
1. According to the passage human beings may have originated in
A. the sea B. the salt C. chemicals D. animals
2. Which of the following is NOT a function of tears?
A. Biological. B. Emotional. C. Political. D. Chemical.
3 According to the article which of the following is unique to humans?
A. The feeling of loneliness. B. The state of feeling good.
C. The ability to shed tears. D. The feeling of fear.
4. The underlined word "eliminate" probably means
A. add B. produce C. replace D. remove
【小题1】A
【小题2】C
【小题3】C
【小题4】D
下列说法正确的是:()A、0不是单项式(ABCD选项见补充)A、0不是单项式.B、5²abc是五次 2020-03-30 …
已知a,b,a+b是等差数列{an}的前三项,a,b,ab是等比数列{bn}的前三项,且bn=an 2020-05-14 …
已知a,b,c,d四个数前三个是以1/2为公比的等比数列,后三个是以-2为公差的等差数列(1)求a 2020-05-16 …
有一等差数列其首项为a及第三项为b.设Sn为其n项之和.若S4,S5,S7为一等比数列的相邻项,则 2020-06-11 …
一个等比数列前三项的积为2,最后三项的积为4,且所有项的积为64,则该数列有()A.13项B.12 2020-06-30 …
两个含有同一个字母的二项式相乘,下列说法中,错误的是()A.积可能是四项式B.积可能是二项式或三项 2020-07-22 …
等比中项的条件若a,b,c三个数按这个顺序排列成等比数列,那么b叫a,c的等比中项B和C要同号为什 2020-07-28 …
下列关于多项式5ab2-2a2bc-1的说法中,正确的是()A.它是三次三项式B.它是四次两项式C 2020-07-31 …
关于周期数列通项公式求解?数列:a,b,c,b,a,d,a,b,c,b,a,d,a,b,c,b,a 2020-08-02 …
excel多项相同的情况下对不同值求和比方说A列B列C列D列在A/B/C三列内容完全相同的情况下对D 2020-11-01 …