Question

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 about young students’ back and neck because their school bags are too heavy for them.
“It’s hard for me to go upstairs with my heavy bag,” said Rick Hammond, an ll-year-old student in the USA.
Rick is among students who have school bags with two straps(带子),and many other students choose rolling(有滚轮的) bags.
But even with rolling bags ,getting upstairs is still a problem for children .Doctors say students should carry no more than 10% to 15% of their own body weight (重量)。
Scott Bautch, a back doctor, said children under Grade 4 should carry no more than 10% of their weight and older children shouldn’t stay with over 15% , because their bodies are still growing.
Teachers and parents should do some things to help children. And the best answer is to have less homework!
【小题1】From the passage we cam 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 USA carry too heavy school bags.

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

【小题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 are too heavy.

D．their parents don’t always go upstairs with them.

【小题3】If a child carries a heavy school bag,        .

A．his back and neck may be hurt.

B．his head and arms may be hurt .

C．his hands may be hurt .

D．his feet may be hurt .

【小题4】According to the doctor, Scott Bautch, if a child in Grade 5 weighs 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

【小题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 getter 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 books instead of thick ones.

Answer 1

【小题1】C
【小题2】B
【小题3】A
【小题4】D
【小题5】A

解析试题分析：这篇短文主要描述了中美学生的书包都很重，这会对学生的身体造成不良影响。专家对此提出了建议，并号召老师和家长采取适当的措施。
【小题1】根据Not only the students in China have this problem, but children in the United States also have heavy school bags.可知中美学生的书包都很重，故选C。
【小题2】根据“It’s hard for me to go upstairs with my heavy bag,” said Rick Hammond,可知选B。
【小题3】根据Doctors are starting to worry about young students’ back and neck because their school bags are too heavy for them.可知对孩子的背部和颈部造成伤害，故选A。
【小题4】根据Scott Bautch, a back doctor, said children under Grade 4 should carry no more than 10% of their weight and older children shouldn’t stay with over 15% ,计算可知30*15%=4.5，故选D。
【小题5】根据And the best answer is to have less homework!联系实际可知学生们当然希望作业更少了，故选A。
考点：介绍中美学生书包过重的说明文
点评：本文中长句较多，一时很难读懂句子含义，注意多读几遍，不要强求非得理解一词一句的含义，能把握文章大意就行。然后带着问题阅读短文，一般就能顺利找出答题依据。对于有关数字的问题,要认真分析,并进行必要的计算.