Are you carrying too much on your back at school? You’re not alone. Back experts(专家) in the USA are worried about that young students are having back and neck problems because they are carrying too much in their backpacks .

“It hurts my back when I run,” said Ebelin Reyes, a student in Virginia. “It’s hard to get up the stairs with my backpack because it’s too heavy.” Students have to carry heavy backpacks on their backs for a whole week’s study. Ebelin is one of them. They have   regular(固定的)backpacks with two straps(带子) to carry them, but a number of students with heavy loads(负担) have switched to rolling backpacks. The backpacks have wheels and can roll on the ground. Shirley Park’s backpack weighs 10 kilos, and she said, “I’ll change to a rolling backpack because I am starting to have back pain.”

How much is too much? Experts say that students should carry no more than 10% to 15% of their own body weight. A few students have had a good idea to lighten(减轻) the load: less homework.

Doctor’s suggestions:

Lighten the load. Take home only the books the students need that day.

(2) Wide straps are better. They can send out weight over your shoulders (肩)and be sure to wear backpacks with two straps.

(3) The heaviest things should be packed closest to the back.

(4) Bend(弯曲) both knees when you pick up the pack, don’t just bend over the waist(腰).

1.The main idea of the passage is about _______.

A．the problems made by rolling backpacks

B．the advantage of backpacks

C．the best backpacks for students

D．how to lighten students’ backpacks

2.From what Ebelin Reyes and Shirley Park said, we know______.

A．students like to carry heavy backpacks

B．students have to do a lot of homework

C．backpacks with wheels are bad for students

D．students have no time to play because of heavy backpacks

3.The underlined word “switch to” means______.

A．use for           B．turn to            C．catch up          D．begin to use

4.According to the experts, it’s better for a student of 40 kilos to carry a backpack of ____ at most.

A．10 kilos           B．8 kilos            C．6 kilos            D．7 kilos

5.If students follow the doctor’s suggestions, they______.

A．may do less homework

B．may feel their backpacks are lighter

C．can learn how to enjoy themselves

D．will know why to wear heavy backpacks

 

Do you have a mobile phone? Do you often send text messages（短信） to your friends or family? If you keep sending text messages over and over again, there may be something wrong with your fingers.  【小题1】 If you don’t, you may get injured one day.
Text messaging or texting is becoming popular. But scientists have found out that texting can give us problems with fingers. Too much texting can make your fingers uncomfortable. When we press small buttons over and over again, we may have a disease called RSI. RSI is short for Repetitive Strain Injury (重复性力损伤).
Harriet Wilson is a doctor. She has many patients with RSI.  【小题2】  If we spend more than 10 to 15 minutes every day, we could have such problems in the future.
Mobile phones are getting smaller and smaller.    【小题3】   Texting with a smaller phone is worse than using a larger phone with bigger buttons.    【小题4】  .
If you use a computer keyboard and play video games for long, you may have the same problem. More and more people can find themselves with RSI.

A. So it’s a good idea to use a larger phone. B. Everybody using the mobile phones should be careful. C. And the buttons are getting closer together. D. It’s easy to find out that mobile phones have changed our life. E. She says we should check how much time we are spending in typing text messages.

【小题5】What does the writer want to tell us?

A．He wants to ask us not to send text messages with mobile phones.

B．He wants to tell us to use small mobile phones to send text messages.

C．He wants to tell us some good ways to communicate with friends.

D．He wants to tell us the damage（伤害） of sending text messages too much.

Do you have a mobile phone? Do you often send text messages（短信） to your friends or family? If you keep sending text messages over and over again, there may be something wrong with your fingers.  1. If you don’t, you may get injured one day.

Text messaging or texting is becoming popular. But scientists have found out that texting can give us problems with fingers. Too much texting can make your fingers uncomfortable. When we press small buttons over and over again, we may have a disease called RSI. RSI is short for Repetitive Strain Injury (重复性力损伤).

Harriet Wilson is a doctor. She has many patients with RSI.  2.  If we spend more than 10 to 15 minutes every day, we could have such problems in the future.

Mobile phones are getting smaller and smaller.    3.   Texting with a smaller phone is worse than using a larger phone with bigger buttons.    4.  .

If you use a computer keyboard and play video games for long, you may have the same problem. More and more people can find themselves with RSI.

A. So it’s a good idea to use a larger phone.

B. Everybody using the mobile phones should be careful.

C. And the buttons are getting closer together.

D. It’s easy to find out that mobile phones have changed our life.

E. She says we should check how much time we are spending in typing text messages.

5.What does the writer want to tell us?

A．He wants to ask us not to send text messages with mobile phones.

B．He wants to tell us to use small mobile phones to send text messages.

C．He wants to tell us some good ways to communicate with friends.

D．He wants to tell us the damage（伤害） of sending text messages too much.

 

Mary，13，went to see a doctor．She had a bad cough．So the doctor gave her some cough medicine．The following are the words on the bottle of medicine．

Cough

Shake well before use

Take three times every day after meals

Dosage at a time： Adults：2 teaspoonfuls Children 8～14：1 teaspoonful Children 4～7：0.5 teaspoonful

Not suitable for children b；low the age of 4．If necessary you must take the doctor’s advise．

Store in a cool place

Use before October 2005

1．How many teaspoonfuls should Mary take in 24 hours?

2．Can all the children take the medicine freely?

3．What is the best place to store this medicine in Mary’s house?

4．What should Mary’s family do with the cough medicine after the tenth month of 2006?