Look closely at your hands. Are they clean? It doesn't matter how many times you wash your hands, tiny microbes (微生物) still stay on them. But don't worry. Most microbes don't harm you.
Now scientists say the microbes on our hands could be used in a surprising way; fighting crime, According to a recent survey microbes as well as fingerprints(指纹) could be used to indentify the criminal.
Everyone has his own set of microbes on the hands. That is to say, if you and your best friend were able to see and compare all the microbes on your hands, your hands probably would look different. Some microbes only show up on your hands while others live only on your friend's hands.
When you work on a computer you leave the microbes from your hands on the keyboard. The scientists can easily tell the owner of the keyboard by looking at the microbes on it. Even if you don't leave your fingerprints behind, your microbes may give you away.
Noah Fierer, a scientist, says. "You can only clean a fingerprint, but you can't sterilize (使无菌) a surface just by wiping(擦) it off," He says that scientists have a lot more work to do before the microbe is used as a useful tool.
【小题1】According to the passage,_______ could be used to identify the criminal.

A．Microbes May Tell Who You Are	B．Scientists Say Everyone Has Microbes
C．Noah Fiercer Does Research Into Microbes	D．Fingerprints Help Catch Criminals

词汇运用 用所给词的适当形式填空（共15小题；每小题1分，满分15分）

1.Thank you for          _____ on them on the plane. (operate)

2.I thought of my good friend when I read your            . (advertise)

3.We should help all children to get an              at school. (educate)

4.His father died because of         (ill).

5.The old man is          to the policeman. (grate)

6.I was made__________(read) the text once more by Miss Chen.

7.I think I should Share his ________ when he is sad. (happy)

8.He says that he wants to be a _________(fly) doctor when he leaves school.

9.I don’t know what made him laugh so__________(excite)?

10.My watch doesn't work. It needs to ______ (repair).

11.Coffee ______ by most Chinese people. (not drink)

12.He spend his spare time_____________ watching TV. (most)

13.The car was one of the _______________. (run)

14.ORBIS is one of the______________ in the world. (charity)

15.Many people in poor area don’t have enough money for______________ treatment. (medicine)

请根据短文内容, 判断下列句子正(T) 误(F).
Mr. Green lives in a small town, but he works in a big city.
One day, Mr. Green drives his car out and washes it. When a friend comes and sees the car, he says, “That’s a nice car. Is it yours?”
“Sometimes,” answers Mr. Green.
The friend is surprised(惊讶的). “Sometimes?” he asks, “What do you mean?”
Mr. Green answers slowly, “Well, when there is a party in the town, my daughter, Jane, drives it. When there is a soccer game, it is my son Joe’s turn. When it looks really nice and clean, my wife Linda uses it. And when it needs cleaning, it’s mine.”
【小题1】Mr. Green lives in a big city.
【小题2】Mr. Green is Jane and Joe’s brother.
【小题3】Joe goes to watch soccer games in the car.
【小题4】Mrs. Green can’t drive a car.
【小题5】Only Mr. Green washes the car.

Everybody dreams. But only some people remember their dreams. Our dreams often include all the senses—smells, sounds, sights, tastes and things we touch.
Early in the twentieth century, two famous scientists developed their personal ideas about dreams. Austrian psychiatrist(奥地利心理学家) Sigmund Freud believed people often dream about things they want but can’t have. Swiss(瑞士) psychiatrist Carl Jung worked closely with Freud for several years, but he believed dreams provide solutions to problems we face when we are awake.
Other researchers are studying how dreaming helps our bodies work with problems and very sad emotions(感情). Robert Stickgold is a professor of psychiatry (心理学教授). He says that when we dream, the brain is trying to make sense of the world. He does not agree with Sigmund Freud that dreaming is the way we express our hidden feelings and desires(愿望).
Scientists believe it is important to keep researching dreams. Yet there is still no agreement on exactly how the brain works when we are dreaming or why we dream.
【小题1】Dreams          . 

Present Obama(奥巴马总统) is very busy, but he has time to go to the school to visit students. He tells them about his life. He says that he learns a lot from his mother. He also asks students to work hard at school.

To help students to be better(更好), Present Obama has some good ideas for them. First, go to school on time every day. Second, listen to teachers carefully in class. Third, do their homework every day. Fourth, don’t watch too much TV.

Please do as what Present Obama says and you will be successful (成功)one day.

1.Present Obama is very            .

A. friendly       B. busy      C.happy

2.Obama learns a lot from his           .

A. father         B. teacher    C. mum

3.What does the Present Obama ask students to do at school?

   A. To do some sports   B. To play with their classmates   C. To work hard

4.Present Obama tells students           

A. not to watch too much TV.

B. not to play computer games.

C. to listen to music in class

5.How many ideas are there from Present Obama?

A. Three .       B. Four.     C. Five.