閱讀理解

　　Are you carrying too much on your back at school? You’re not alone．Back experts in the United States are worried that young students are having back and neck problems as a result of carrying too much in their backpacks(schoolbags)．

　　“It hurts my back when I run,” said Oberlin Reyes, a student in Virginia．“It’s hard to get up the stairs with my backpack, because it’s too heavy．”

　　Oberlin is among students whose backpacks were weighed for a week in a recent study．

　　They had regular backpacks with two straps(帶子)to carry them, but a number of students with heavy loads had switched to rolling backpacks(which have wheels and can roll on the ground)．

　　Shirley Park, whose backpack weighed 10 kilograms, said she changed to a rolling backpack because she was starting to have back pain．

　　How much is too much? Experts say students should carry no more than 10 to 15 percent of their own body weight．

　　A few students had one suggestion to lighten the load：less homework．

　　P．S．(附)Doctor’s suggestion：

　　① Lighten the load．Clean out binders(活頁(yè)材料)and take home only the books you need that night．

　�、� Wide straps are better．They send out the weight over your shoulders more evenly(均勻)．And be sure to wear both straps rather than hanging the pack over one shoulder．

　�、� Pack smart．The heavier things should be packed closed to the back．

　　④ Bend both knees when you pick up the pack, and don’t just bend over at the waist(腰)．

(1)

“________” is the main idea of the text．

[　　]

A．

The problem of backpacks is worth studying

B．

The problem made by heavy backpacks

C．

What is the best backpack for a student

D．

How to make students’ backpacks light

(2)

According to Enderlin Reyes and Shirley Park, we know ________．

[　　]

A．

students have to do too much homework

B．

backpacks have to carry heavy backpacks

C．

backpacks without wheels are bad for students

D．

too much homework leaves students no free time

(3)

The expression “switched to” in the text perhaps means ________．

[　　]

A．

started to use

B．

turned to

C．

caught up

D．

used for

(4)

According to the passage, it’s better for a student of 40 kilograms to carry a backpack of ________ at most by the words of experts．

[　　]

A．

10 kg

B．

8 kg

C．

6 kg

D．

7 kg

(5)

If students follow the doctor’s suggestions they ________．

[　　]

A．

may lighten their backpacks

B．

can learn how to help themselves

C．

may feel their backpacks are lighter

D．

will know how to wear backpacks

答案：1．D;2．A;3．A;4．C;5．C;
解析：

(1)

根據(jù)首段末句及所附醫(yī)生的建議可知選項(xiàng)D乃是文章主旨．

(2)

短文前兩句是本題答案之所在．

(3)

根據(jù)該詞組所在句子及上下文意思，“許多學(xué)生使用帶有輪子，可在地上滾動(dòng)的書(shū)包”可以推測(cè)選項(xiàng)A的解釋合乎文意．

(4)

專(zhuān)家建議學(xué)生書(shū)包重量應(yīng)在他本人體重的10％和15％之間．所以一個(gè)體重為40千克的學(xué)生所背書(shū)包的重量應(yīng)是6千克．

(5)

　　顯然，專(zhuān)家所提四項(xiàng)建議的目的是讓學(xué)生的書(shū)包輕一些．

　　這篇短文反映了學(xué)生書(shū)包過(guò)重這一引發(fā)人們思考的生活現(xiàn)實(shí)．書(shū)包過(guò)重引起了學(xué)生身體的不適．文中引用了幾位學(xué)生對(duì)沉重書(shū)包的感想和體會(huì)，有的學(xué)生甚至還在書(shū)包上安裝了輪子．專(zhuān)家認(rèn)為書(shū)包重量不應(yīng)超過(guò)學(xué)生體重的10％-15％．學(xué)生則認(rèn)為減少作業(yè)量才能徹底解決這一問(wèn)題．為了減小過(guò)重書(shū)包對(duì)學(xué)生身體造成的傷害，短文最后還附了醫(yī)生的四點(diǎn)建議．


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