满分5 > 初中英语试题 >

DNA is the whole “map” of the human body...

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

 

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
复制答案
考点分析:
相关试题推荐

Some people think only school children do not agree with their parents, however, it is not true. Communication is a problem for parents and children of all ages. If it’s hard for you to communicate with your parents, don’t worry about it. Here are some advice for you to bridge the generation gap (代沟).

Don’t argue with your parents. Don’t get to your parents when you are angry. Your parents probably won’t consider your ideas if you are shouting at them. And you can’t express yourself well if you are angry. Go someplace to cool off. Make sure you understand why you are unhappy. Then think about what you want to say to your parents. If you don’t think you can speak to them at the moment, try writing a letter.

Try to reach a compromise (和解). Perhaps you and your parents disagree on something. You can keep your disagreement and try your best to accept each other. Michael’s mother didn’t agree with him about buying a motorbike. They argued over it. But they finally came to a compromise. Michael bought the motorbike, but only drove it on certain days.

Of course, your parents might refuse to compromise on something. In these situations, it is especially important to show love and respect to them. Showing respect will keep your relationship(关系) strong.

Talk about your values. The values of your parents are probably different from those of your own. Tell your parents what you care about, and why. Understanding your values might help them see your purposes in life.

A good relationship with your parents can make you a better and happier person. It is worth having a try!

根据短文内容,选择正确答案。

1.According to the passage who have a communication problem?

A.parents and other people                 B.only school kids and their parents

C.teachers and their students                D.parents and children of all ages

2.How many pieces of advice does the writer give us to bridge the generation gap?

A.5.               B.4.                C.3.               D.2.

3.The underlined word “bridge” in the passage means “______”.

A.建立             B.消除             C.通过             D.到达

4.If the values of your parents are different from those of yours, you’d better ______.

A.argue with them                        B.keep away from them

C.agree with them all the time               D.tell your parents what you care about

5.The best title for the passage is______.

A.How to bridge the generation gap           B.How to deal with family problems

C.How to be good parents                  D.How to be a good child

 

查看答案

A man walked into a restaurant. The restaurant advertised it had the   1   menu in the world. The manager was very proud of being able to provide any dish, no matter how   2   it was.

At the bottom of the   3  , there was a notice that said, “If you do not see the dish you need on this menu, please tell us and we will add it to the menu right away.”

The man   4   the menu and decided to make sure if it was true. He would order   5    that was very unusual.

When a waiter came up to take his order, he said, “You say you can serve any dish, even if it’s not on your longest menu in the world.”

“That is correct, sir. We are able to meet everyone’s requirements.”

“Well,” the man said, “bring me a sandwich with two elephant ears.   6  , not African.”

The waiter wrote down in his paper: Two Indian elephant ears on toast.

“Very good, sir,” he said. “That shouldn’t   7   long.”

The waiter walked away quickly.

The man was very surprised and rather disappointed.

Then he smiled   8  the waiter returned with a very unhappy look on his face.

“Ah!” the man said. “You can’t  9  it to me, can you?”

The waiter made an apology (道歉).

“I’m very sorry, sir, and this is the   10  embarrassing,”(困窘 ) he said, “but I’m afraid we can’t because we’ve run out of bread.”

1.                A.biggest         B.thickest         C.heaviest  D.longest

 

2.                A.unfair          B.unusual         C.beautiful  D.important

 

3.                A.menu          B.dish            C.restaurant D.table

 

4.                A.looked for      B.took out        C.looked at D.picked up

 

5.                A.anything        B.nothing         C.everything D.something

 

6.                A.American       B.Indian          C.Canadian  D.Australian

 

7.                A.pay            B.cost            C. take D.spend

 

8.                A.as             B.and            C.so   D.though

 

9.                A.catch          B.take           C.fetch D.bring

 

10.               A.least           B.most           C.less  D.more

 

 

查看答案

—Oh, Mary is not here these days. Is she ill?

    Her mother told me that she was in hospital.

A.I am afraid so       B.I hope so          C.I don’t mind      D.I don’t think so

 

查看答案

----What will we do if we want to develop our village ?

---- A lot of roads ______. I think .

A.have to build       B.are build          C.must be built       D.will build

 

查看答案

We____here two hours ago . So we___ _here for two hours .

A.have arrived , have been                 B.have come , have been

C.came , have come                       D.arrived , have been

 

查看答案
试题属性

Copyright @ 2008-2019 满分5 学习网 ManFen5.COM. All Rights Reserved.