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 that younger and younger students are having back and neck problems as a result of schools 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(有滚轮的)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(重量).
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 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 answers is, as some children said, to have no homework at all!

1. 1.
   From the passage we can know that______.
   1. A.
      only children in China carry too heavy school bags
   2. B.
      children in other countries don’t carry too heavy bags
   3. C.
      both children in China and the US carry too heavy school bags
   4. D.
      only children in the US carry too heavy school bags
2. 2.
   Children feel it hard for them to go upstairs because______.
   1. A.
      they are too young
   2. B.
      their school bags are too heavy
   3. C.
      they don’t know how to go upstairs
   4. D.
      their parents don’t always go upstairs with them together
3. 3.
   If a child carries a heavy school bag,______.
   1. A.
      his back and neck will be hurt
   2. B.
      his head and arms will be hurt
   3. C.
      his hands will be hurt
   4. D.
      his feet will be hurt
4. 4.
   According to the doctor, Scott Bautch, if a child in Grade 5 weighs(重) about 30 kilos, the school bag he carries should not be over______.
   1. A.
      5 kilos
   2. B.
      3 kilos
   3. C.
      5. 5 kilos
   4. D.
      4, 5 kilos
5. 5.
   Some students think the best answer to his problems is that______.
   1. A.
      they should have a little homework to do after they get home
   2. B.
      their teachers had better not ask them to do any homework
   3. C.
      they should only take home library books they will read that night
   4. D.
      they should use thin workbooks instead of thick ones

Answer 1

CBADB
本文讲的是书包太重给学生带来的问题。
1. C 细节题。根据Not only the students in China have this problem, but children in the United States also have heavy school bags可知不但中国学生有书包太重这个问题，而且美国也有，故选C。
2. B 细节题。答案来自说话的内容：It’s hard for me to go upstairs with my bag because it’s so heavy，可知是书包重导致的结果，故选B。
3. A 定位到第二段，根据younger and younger students are having back and neck problems as a result of schools bags being too heavy for them可知是学生的背部和颈部出现了问题，故也受到了伤害，选A。
4. D 此题是个计算题。从文中Doctors say students should carry no more than 10% to 15%及don’t stay with over 15 %可知，最大的承受量是30*15%＝4.5，故选D。
5. B 细节题，答案来自文章最后一句，One of the best answers is, as some children said, to have no homework at all是说不要做任何的作业，故选B。