题目内容：

parents usually go to malls to find new school supplies for their children. One of the most important things to get during this time is the  backpack. Most students choose to bring a backpack because it allows them to have both hands free. This makes the bag less likely to hinder (妨碍)other activities that the person carrying it may be doing at the same time. Here are the ways parents can choose the perfect backpack for school.

How many books will children be carrying to school? How many notebooks should be inside the bag? Parents should know these details before buying a bag for their children. Each situation requires a different bag so it pays to ask children about the expected load.

Do children need special storage for the bag? If they will be carrying a laptop computer inside the new backpack，make sure that parents get a model that’s designed specifically for laptop use. This will protect the computer from bumps and falls that might damage the device if it had less protection.

Are children going to use the bag for a long time? If they want to use a bag for a long time，parents will be better off investing in a good brand that is known for quality. Parents may have to pay extra cash to get the top of the line and the best backpack in the market.

1.Why do most students like bringing a backpack?

A. Because it looks beautiful.

B. Because it’s a duty for them to bring it.

C. Because they can put all the books into it.

D. Because it helps them do other activities freely.

2.What does the second paragraph mainly talk about?

A. Parents should find out how many books their children have.

B. Parents must ask teachers for help before buying a backpack.

C. Parents should know the weight of things that will go inside the backpack.

D. Parents must ask their children’s requirements when buying a backpack.

3.The underlined word “bumps” in the third paragraph is closest in meaning to“      ”.

A.knocks B. jumps C. stands D. beats

4.Which of the following can we know from the text?

A. Picking a backpack is very easy to do.

B. It’s better for children to have a backpack that has more pockets.

C. The backpacks that have a good brand are more popular with children.

D. Parents always feel worried when buying a backpack for their children.