Question

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.

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

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

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

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.

5.What do people think about this research about DNA?

A．It can be only bad                       B．It can be only good

C．It can be good but won’t work            D．It can be good and bad

 

Answer 1

【答案】

1.D

2.C

3.A

4.B

5.D

【解析】

试题分析：这篇短文简要的介绍了额DNA的发现历史，并介绍了这一发现对于人类生活的影响及人们对此的不同意见。

1.根据In1860, Mr Mendel discovered why we look the same as other people in our family. 描述，可知选D。

2.根据In1961, another two scientists found the first “word” that they could understand in that language.描述，可知选C。

3.根据Most people hope that this will help to make better medicine and help sick people.及上文描述，可知选A，制作更好的药物。

4.根据So far, scientists have found all the words in the DNA map, but we still do not understand what they all do.可知选项B，描述错误。

5.根据短文最后一段描述，可知人们对这一发现持正反两方面的意见。故选D，可能好可能坏。

考点：关于DNA问题的说明文阅读

点评：本文浅显易懂，各个小题都能在文中找到适当依据。只要认真阅读短文，注意前后联系，就能顺利完成阅读。文章所设试题主要考察细节查找，做题关键是找出原文的根据，认真核查小题和原文的异同。