5.John will ____ the medicine when it
is left after Dec.1st, 2002.
A. throw away B. stop to take C.
take once D. take six times more
Passage 72 (Be omitted)
Passage 73
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 (带子) 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 (活页材料) 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 (均匀).
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 pick up the pack, and don’t just bend over at the waist (腰).
