题目内容

Look, the Maths teacher with his students _________on the grass to have a good rest at present.

A.is lying            B.is lieing           C.are lying          D.be lying

 

【答案】

A

【解析】

试题分析:句意:看,这个数学老师正在和他的学生躺在草地上休息。with连接两个主语时,重点强调前者,谓语动词的数与第一个名词的数保持一致,本题中数学老师是主语,故用单数形式,lie表示“躺着”,现在分词的形式是lying,故选A

考点:主谓一致

点评:中考涉及到的主谓一致的情况较多,以单数名词或代词、动词不定式短语、动名词短语或从句作主语时,谓语动词一般用单数形式;主语为复数时,谓语动词用复数形式。平时的学习中遇到了这样的语言点首先要将其理解,把握好考试的难度,并进行记忆。

 

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DNA is the whole “map” of the human body. It is something that all humans have, and it tells the body what to do. DNA is the reason that we look like our parents, because we get some of their DNA to make our own.
People have been trying to understand the human body for a long time, In1860, Mr Mendel discovered why we look the same as other people in our family. It is because of small things called “genes”(基因) in our body. In 1953, two scientists, Watson and Crick, found out that those small parts are really messages . They’re written in the DNA with a special language.
In1961, another two scientists found the first “word” that they could understand in that language. It shows how DNA tells the cell﹙细胞﹚to build its parts. So far, scientists have found all the words in the DNA map, but we still do not understand what they all do. By understanding what just one “word ”means, we can help to save people from several illness. So the more we understand, the more doctors will be able to do.
Most people hope that this will help to make better medicine and help sick people. Other people worry that when we learn more “words” and find out more information, we will use it in the wrong way, just to make people more attractive (有吸引力的),or stop sick people getting jobs.
【小题1】When did Mr Mendel discover why we look the same as other people in our family?
A. In 2000.     B. In 1961      C. In 1953     D In 1860
【小题2】What did the two scientists find in 1961? They found_____.

A.all the words in the DNA map
B.Small things called “genes” in our body
C.The first “word” they could understand in that language
D.those small parts are written in the DNA with a special language
【小题3】How can we help sick people if we understand more “words” in the DNA map?
A.Make better medicine.B.Make them get jobs.
C.Make maps for them.D.Make them attractive
【小题4】Which one is not true according to the article?
A.We look like our parents because of “genes” in our body
B.We have understand what all the words in the DNA map do
C.DNA is the whole “map” of the human body.
D.DNA tells the cell to build its parts.
【小题5】What do people think about this research about DNA?
A.It can be only badB.It can be only good
C.It can be good but won’t workD.It can be good and bad

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