Question

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 go up the stairs with my backpack,because it’s too heavy,”
Oberlin was 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(活頁材料)and take home only the books you need that night.
2 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.
3. Pack smart. The heavier things should be packed closed to the back.
4.Bend both knees when you pich up the pack ,and don’t just bend over  at the waist.(腰)
【小題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.
【小題2】According to Oberlin Reyes and Shirley Park, we know________.
A students have to do too much homework
B students have to carry several backpacks
C backpacks without wheels are bad for students
D too much homework leaves students no free time
【小題3】The expression “switched to” in the text perhaps means________.
A started to use  B turned to  C caught up   D used for
【小題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 10kg    B 8kg  C 6kg    D 7kg
【小題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

Answer 1

【小題1】D
【小題2】A
【小題3】A
【小題4】C
【小題5】C

解析【小題1】本文主要談論了美國學生們的書包里所背的東西太多太重，如何才能使學生們的書包減輕，故本題選D。
【小題2】本文中有一句為A few students had one suggestion to lighten the load:less homework.所表示的含義為學生有太多的作業(yè)從來導致書包太重，故本題選A。
【小題3】本文第三段最后一句為a number of students with heavy loads had switched to rolling backpacks 所表示的含義許多背著很重東西的學生開始使用可以在地上轉動的書包，所以“switched to”的含義為開始使用的含義，故本題選A。
【小題4】本文中有一句為Experts say students should carry no more than 10 to 15 percent of their own body weight.，所表示的含義為學生們所背的東西重量不要超過自身重量的百分之10到15，所以40公斤的學生背的東西重量不要超過6公斤，故本題選C。
【小題5】本文最后提到了醫(yī)生的4點減輕學生負荷的建議，如果學生采取，他們可能會減輕他們的書包重量，故本題選C 。