Question

【題目】

You think it's "cool" to carry your backpacks and head out to school. But if you don't know exactly how to choose, load, lift and wear them-these all-important accessories（配件）can be a pain in the back. Not to mention the neck, head and shoulders.

Backpacks can influence your health. Carrying a heavy load improperly can lead to poor body position; and even hurt the spinal column(脊柱）This can cause muscle strain, headaches, back, neck and arm pain.

For example, if it is carried on one shoulder; a heavy backpack forces the muscles and spine to balance the unequal weight. This may increase the possible back problems later in life.

More than 50 percent of young people suffer back pain by their teenage years. Research shows that this could be mainly caused improper use of backpacks.

Here's some advice to help you carry backpacks comfortably and safely.

Choose the right backpack. Forget leather（皮革）! It looks great, but it's far too heavy. Go for canvas（帆布）. Pick a pack that has two wide, adjustable, comfortable shoulder straps（帶子）, along with a hip or waist strap, and plenty of pockets. Make sure the pack fits properly and its size is suitable for the wearer's body.

Packing it properly. Only put in the pack what is needed for that day. It's a good idea to know what each object weighs. The total weight of the filled pack should be no more than 10 to 15 percent of the wearer's own body weight. Pack heaviest objects close to the body, and place little ones outside, away from the back.

Putting the backpack on. Put the pack on a smooth surface, at waist height. Put on the pack, one shoulder at a time, then adjust（調(diào)整）the straps to fit comfortably. Remember when lifting a backpack, or anything, to lift using the arms and legs and to bend at the knees.

The right way to wear a backpack. Both shoulder straps should be used, and adjusted so that the pack fits the body, without hanging to one side. Backpacks should never be worn over just one shoulder. You should be able to move your hands between the backpack and your back. The waist strap should also be worn.

Take the above advice, and you may not complain back pain, numbness or weakness in your arms and legs any more.

【1】What could mainly cause some young people to suffer back pain by their teenage years?

A. Too much homework.B. Poor treatment for backs.

C. Improper use of backpacks.D. Unhealthy sleep position

【2】Which of the following does the writer suggest?

①Choose leather backpacks because it looks "cool" to go to school.

② Pick a pack that its size is suitable for the wearer's body.

③Make sure the backpack contains only what is needed for that day

④Pack heaviest objects close to the body, and place little ones outside.

⑤ Put the pack on a smooth surface, above the waist height.

A. ①②④B. ①③⑤C. ②③④D. ②③⑤

【3】If a boy weighs 40kg, how heavy should his filled backpack be at most?

A. About 4kg.B. About 6kg.C. About 10kg.D. About 15kg.

【4】What is the passage mainly about?

A. Some problems that teenagers face in their study at school.

B. The suitable backpack material that you should choose.

C. The good influence that backpacks have on your health

D. Some advice on how to carry backpacks comfortably and safely.

Answer 1

【答案】

【1】C

【2】C

【3】B

【4】D

【解析】

本篇文章難度適中，主要講述背包會影響我們的健康，作者給出了一些關(guān)于如何舒服地和安全地背包的建議

【1】細節(jié)理解題。根據(jù)Carrying a heavy load improperly can lead to poor body position; and even hurt the spinal column(脊柱）This can cause muscle strain, headaches, back, neck and arm pain可知，不適當?shù)厥褂帽嘲鼤�造成青少年承受疼痛，故選C。

【2】細節(jié)理解題。根據(jù)Choose the right backpack. Forget leather（皮革）! It looks great, but it's far too heavy可知，選擇合適的背包，不要使用皮革書包，所以①錯誤；Make sure the pack fits properly and its size is suitable for the wearer's body確保尺寸適合背包人的身體，②正確；根據(jù)Packing it properly. Only put in the pack what is needed for that day可知，書包里背的是今天所需要的東西，③正確；根據(jù)Pack heaviest objects close to the body, and place little ones outside, away from the back可知，將重的物品靠近身體，輕的放在外面，④正確；根據(jù)Put the pack on a smooth surface, at waist height可知，將包放在腰部光滑的位置，而不是超過腰部，⑤錯誤，故選C。

【3】細節(jié)理解題。根據(jù)The total weight of the filled pack should be no more than 10 to 15 percent of the wearer's own body weight可知，書包的重量不能超過體重的10%至15%，所以一個人40公斤，書包最多重6公斤，故選B。

【4】主旨大意題。本文主要講述背包會影響我們的健康，作者給出了一些關(guān)于如何舒服地和安全地背包的建議，故選D。