Question

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　　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 also children in the United States have heavy schoolbags.

　　Doctors are starting to worry that younger and younger students are having back and neck problems as a result of schoolbags 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 schoolbags with two straps (帶子) to carry them, but many students choose rolling (有滾輪的) bags.

　　But even with rolling bags, getting up stairs and buses is still a problem for children. Many of them 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 Grade 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 schoolbags,” he said.

　　Parents and teachers are starting to tell children to only take home the 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 answers is, as some children said, to have no homework at all!

(1) From the passage we can know that ________ .

[　　]

A. only children in China carry too heavy schoolbags

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

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

D. only children in the US carry too heavy schoolbags

(2) Children feel it hard for them to go upstairs because ________ .

[　　]

A. they are too young

B. their school bags are too heavy

C. they don't know how to go upstairs

D. their parents don't always go upstairs with them together

(3) If a child carry a heavy schoolbag, ________ .

[　　]

A. his back and neck will be hurt

B. his head and arms will be hurt

C. his hands will be hurt

D. his feet will be hurt

(4) According to the doctor, Scott Bautch, if a child in Grade 5 weighs about 30 kilos, the schoolbag he carries should not be over ________ .

[　　]

A. 5 kilos

B. 3 kilos

C. 5.5 kilos

D. 4.5 kilos

(5) Some students think the best answer to this problem is that ________ .

[　　]

A. they should have a little homework to do after they get home

B. their teachers had better not ask them to do any homework,

C. they should only take home the books they will read that night

D. they should use thin workbooks instead of thick ones

Answer 1

答案：C;B;A;D;B
解析：

(1) C 從第一段的結(jié)尾可以知道本題的答案 (2) B 本題談小學(xué)生書包沉重的問題 (3) A 從第二段可知 (4) D 30×15％=4.5 (5) B 從最后的一句可以知道本題的答案