B

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 I860, 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.

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,(有几个单词看不清) 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 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 wc Icam 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.

根据短文内容，选择最佳答案。

26. 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.

27. 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 arc written in the DNA with a special language

28. 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.

29. Which one is not true according to the article?

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

B. We have understood 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.

30. 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.

III.阅读表达

“If I had one million yuan, I would buy you a palace! Do I have one million yuan? No, I don’t! So I only can spend ten fen on this short message, sending you my best wishes!”

Today, SMS—Short Message Service is popular, and China Mobile says that every second, there are 410 messages being sent.

Look around you! People are watching their mobiles, smiling or laughing. Thumbs are moving quickly on mobiles, bringing happiness to their friends. Through SMS, we know the weather report, share jokes and news, express love and friendship.

SMS is becoming more and more popular. It is reported that 67% of young people like to send short messages to greet each other. Internet SMS will be more helpful to people. I am thankful for the progress because SMS saves me much money. Just on the top end of a thumb, so much joy can be found!

1. Is SMS—Short Message Service very popular in China? ___________________

2. How much does one short message cost according to the passage?____________

3. Which finger plays the most important role (角色) when sending short messages on mobiles?________________________________________

4. Who like SMS better, the young or the old? _______________________________

5. The passage is mainly about _________

IV还原短文。

Scientists are trying to make the deserts (沙漠) into good land again, They want to bring water to the deserts,______1________ They are learning a lot about the deserts. But more and more of the earth is becoming desert all the time. Scientists may not be able to change the desert in time.

__________2_____Scientists think that people make deserts. People are doing bad things to the earth. Some places on the earth don't get very much rain. But they still don't become deserts.______3______. Small green plants and grass are very important to dry places._____4_______ When a little bit of rain falls, the plants hold the water. ____5______.

A. This is because some green plants are growing there

B. so people can live and grow food

C. Without plants, the land can become a desert much more easily.

D. Plants don't let the hot sun make the earth even drier.

E. Why is more and more land becoming desert?

V. 词汇考查。

(A) 选词并用其适当形式填空.( exercise two little die health dance enjoy )

1.Doing sports is good for our _____. You’d better keep _____.

2.We teenagers need at _____ eight hours’ sleep every night.

3.We are ____to climb Mount Tai.

4. His grandpa’s _____ made him sad.

5.Tina has two ________ lessons every day.

6.We should brush our teeth ____ a day.

7. My grandmother is well because she ____ every day.

(B)用所给动词的适当形式填空。

8. I eat more vegetables and less meat. I think my _____________ ( eat ) habits are pretty good.

9. Look! Here _____________ ( be ) some money for you.

10. I think my healthy lifestyle helps me _____________ ( get ) good grades.

11. Mike with his friends _____________ ( exercise ) every day.

12. I think the best way _________(relax) is through exercise.

13. Jane is afraid of teeth ________(clean). 14. It’s good for us ___________(exercise).

15.What kind of dance are you _______(learn)?