for kids. Many of them have hurt their knees, backs or necks because of heavy school bags.

But how much is too __11__? Experts say students should carry __12__ more than 10 to 15

per cent of their own body weight.

Scott Bautch, a Wisconsin __13__doctor, said kids under 4th grade should __14__with 10

per cent. But it's also important that older kids don't go __15__ 15 percent, because their bones

are still growing.

Bautch explained that there are other injuries caused by backpacks. "Kids are __16__ their

balance and falling down with these backpacks," he said.

Parents and teachers are starting to tell the kids to only take __17__ library books they will

be reading that night. Some teachers are using worksheets(作业纸) or __18__ workbooks for

students to take home.

One of the best answers is, as some __19__ themselves suggested, to have no homework

__20__!

1. A. meeting B. facing C. experiencing D. suffering

2. A. already B. always C. yet D. also

3. A. explain B. say C. worry D. announce

4. A. being B. be C. are D. is

5. A. schools B. stairs C. houses D. homes

6. A. this B. that C. a D. an

7. A. special B. unusual C. ordinary D. regular

8. A. when B. then C. but D. and

9. A. getting B. climbing C. going D. turning

10. A. only B. still C. even D. just

11. A. more B. very C. much D. many

12. A. no B. not C. any D. much

13. A. children B. student C. bag D. baby

14. A. carry B. stay C. take D. bring

15. A. about B. under C. beyond D. before

16. A. keeping B. missing C. losing D. making

17. A. home B. class C. school D. city

18. A. valuable B. thin C. important D. interesting

19. A. reports B. teachers C. parents D. kids

20. A. at all B. after all C. in all D. for all

三、阅读理解

Bamboo is one of the nature's most surprising plants. Many people call this plant a tree, but it

is a kind of grass.

Like other kinds of grass, a bamboo plant may be cut very low to the ground, but it will grow

back very quickly. A Japanese scientist recorded one bamboo plant that grew almost 1.5 meters in

24 hours! Bamboo grows almost everywhere in the world except Europe. There are more than

1,000 kinds of bamboo that grow around the world on both mountains and plains(平原).

Not all bamboo looks the same. Some bamboo plants are very thin. They may only grow to

be a few centimeters wide while others may grow to more than 30 centimeters across. This plant

also comes in different colors, from yellow to black to green.