Are you carrying too much on your back at school? I’m sure lots of children of your age will say “Yes”. Not only the students in China have this problem, but children in the United States also have heavy school bags.

Doctors are starting to worry that younger and younger students are having back and neck problems as a result of school bags being too heavy for them.“It’s hard for me to go upstairs with my bag because it’s so heavy,” said Rick Hammond, an 11-year-old student in the US.

Rick is among students who have common school bags with two straps（带子）to carry them, but many other students choose rolling bags. But even with rolling bags, getting up stairs and buses is still a problem for children. Many of them have hurt their backs and necks because of the heavy school bags.

But how much is too much? Doctors say students should carry no more than 10% to 15% of their own body weight.

Scott Bautch, a back doctor, said children under 4 should stay with 10%. But it is also important that older children don’t stay with over 15%, because their bodies are still growing. “Children are losing their balance（平衡）and falling down with their school bags.” He said.

Parents and teachers are starting to tell children to only take home library books they will be reading that night. Some teachers are using pieces of paper or thin workbooks for students to take home.

One of the best answer is, as some children said, to have no homework at all!　

(　 )48. From the passage we can know that_______.

A. only children in China carry too heavy school bags　　　　　　　

B. children in other countries don’t carry too heavy bags

C. both children in China and the US carry too heavy school bags　　　　　

D. only children in the US carry too heavy school bags

( )49. If a child carries a heavy school bag,_______.

A. his back and neck will be hurt

B. his head and arm will be hurt

C. his hands will be hurt

D. his feet will be hurt

(　 )50. According to the doctor, Scott Bautch, if a child in Grade 5 weigh about 30 kilos, the school bag he carries should not be over________ .

A. 5 kilos　　　 B. 3 kilos　　 　 C. 5.5 kilos　　　 D.4.5 kilos

Today almost everyone knows computers and the Internet. If I ask you “What is the most important thing in your life?” maybe you will say “Computers and the Internet”.
The first computer was made in 1946. It was very big but it worked slowly.. Today, computers are getting smaller and smaller, but they work faster and faster. What can computers do? A writer has said, “People can't live without computers today.”
The Internet came a little later than computers. It is about 25 years later than computers. But now it can be found almost everywhere. We can use it to read books, send e-mails, do some shopping, play games or make friends.             
Young men, especially the middle school students like the Internet very much. They often go into the Internet bars as soon as they are free. They make friends on the Internet and maybe they have never seen these friends. They don't know their names, ages and sex. They are so interested in making the “unreal friends” that they can't put their heart into study. Some of them play the games in the Internet bars all day and all night. Many of them can't catch up with others in many subjects because of that.
Now the government has done many things. Some gangster Internet bars(黑网吧)have been banned. But that's not enough. The teachers and parents are still worrying about their students and children.
We can use computers and the Internet to learn more about the world. But at the same time, we should remember that computers and the Internet could not do all the things.
【小题1】How was the first computers?

Today almost everyone knows computers and the Internet. If I ask you “What is the most important thing in your life?” maybe you will say “Computers and the Internet”.

The first computer was made in 1946. It was very big but it worked slowly.. Today, computers are getting smaller and smaller, but they work faster and faster. What can computers do? A writer has said, “People can't live without computers today.”

The Internet came a little later than computers. It is about 25 years later than computers. But now it can be found almost everywhere. We can use it to read books, send e-mails, do some shopping, play games or make friends.             

Young men, especially the middle school students like the Internet very much. They often go into the Internet bars as soon as they are free. They make friends on the Internet and maybe they have never seen these friends. They don't know their names, ages and sex. They are so interested in making the “unreal friends” that they can't put their heart into study. Some of them play the games in the Internet bars all day and all night. Many of them can't catch up with others in many subjects because of that.

Now the government has done many things. Some gangster Internet bars(黑网吧)have been banned. But that's not enough. The teachers and parents are still worrying about their students and children.

We can use computers and the Internet to learn more about the world. But at the same time, we should remember that computers and the Internet could not do all the things.

1.How was the first computers?

2.When did people begin to use the Internet?

3.Which of the following is true?

4.Which is the best title of the passage?

5.What's the meaning of the word “that” in the fourth paragraph ?

Today almost everyone knows computers and the Internet. If I ask you “What is the most important thing in your life?”, maybe you will say “Computers and the Internet”.

     The first computer was made in 1946. It was very big but it worked slowly. Today, computers are getting smaller, and smaller, but they work faster and faster. What can computers do? A writer has said, “People can’t live without computers today.”

     The Internet came a little later than computers. It is about twenty-five years later than computers. But now it can be found almost everywhere. We can use it to read books, send e-mails, do some shopping, play games or make friends.             

     Young men, especially the middle school students like the Internet very much. They often go into the Internet bars as soon as they are free. They make friends on the Internet and maybe they have never seen these friends. They don’t know their names, ages and sex(性别). They are so interested in making the “unreal friends” that they can’t put their heart into study. Some of them play the games in the Internet bars all day and all night. Many of them can’t catch up with others in many subjects because of that.

      Now the government has done many things. Some gangster Internet bars(黑网吧)have been banned(取缔). But that’s not enough. The teachers and parents are still worrying about their students and children.

    We can use computers and the Internet to learn more about the world. But at the same time, we should remember that computers and the Internet could not do all the things.    

1. How was the first computer?

A. It was not big.         B. It couldn’t work fast.   

C. It was very cheap.      D. It was no useful

2. When did people begin to use the Internet?

  A. In the 19th century.     B. In the 1980s.   C. In the 1970s.     D. In the 1960s

3. Which of the following is true?

A. Computers can help people do everything.

B. Middle school students aren’t allowed to use the Internet.

C. Some students have used the Internet bars to make the “unreal friends”.

D. Computer isn’t good to students.

4. Which is the best title of the passage?

A. Computers and the Internet.     B. The Greatest Invention of This Century.

C. Gangster Internet Bars.          D. How to use the Internet

5. What's the meaning of the word “that” in the fourth paragraph (段落)?

A. Students often go into the Internet bars as soon as they are free.

B. And they play the games in the Internet bars all day and all night.

C. Students are so interested in making the “unreal friends” that they can’t put their heart into study.

D. All of above