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. In 1860, 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 genes are really messages. They’re written in the DNA with a special language.

In 1961, 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 don’t understand what they all do. By understanding what just one “word” means, we can help to save people from several illnesses. 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 1680.????????????? ????????????? B. In 1860.????????????? ????????????? C. In 1953.????????????? ????????????? D. In 1961.

2.Watson and Crick found ______ in 1953.

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. genes 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 passage?

A. We look like our parents because of “genes” in our body.

B. We have understood what all the words in the DNA map do.

C. Scientists have found all the words in the DNA map.

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 or bad.

________ I read, ________ I'll be．

1. A.
   The much, the happy
2. B.
   More, happier
3. C.
   The more, the happier
4. D.
   The most, the happiest

A Hard-working Student

This story is about a young student. She worked very hard at her lessons. She was too busy to have a rest. At last, she became ill, and couldn’t go to sleep. Every night, when she went to bed, she closed her eyes and tried to sleep. But the more she tried, the more she stayed awake.

After a while she went to see a doctor, “I just can’t go to sleep at night. What should I do?” “I have a suggestion (建议),” said the doctor, “Try counting numbers. By the time you reach one thousand, you will be asleep. I’m sure of it.”

The next day the student returned to the doctor’s office. “Well,” said the doctor, “How are you today? Did you try my suggestion?” The student still looked tired. “Yes,” she said, “I tried counting one, two, three...up to one thousand. But when I reached five hundred and sixty-nine, I began to feel sleepy. I had to get up and drink some coffee so that (以便) I could go on counting up to one thousand. But then I still couldn’t fall asleep.”

根据短文内容,选择正确答案。

1. Why couldn’t the young student go to sleep?

2. What did the doctor ask the young student to do while she was lying in bed?

3. The underlined word “awake” in paragraph 1 means “______”.

4. What did she do after she felt sleepy?

5. The coffee made her ______, so she still couldn’t fall asleep.