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【多选题】
关于轮椅的下台阶训练不正确的是A.
四轮着地正面下台阶适用于5~8cm的台面高度
B.
四轮着地倒退下台阶适用于8cm以上的台面高度
C.
下台阶不能抬起前轮
D.
可用抬起后轮的下法
E.
下台阶必须他人帮助，不能独立进行
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反馈参考答案：
举一反三
【单选题】Some people waste food，________other people haven’t got enough to eat.
A.
when
B.
until
C.
since
D.
while
【单选题】Some people waste a lot of food others in the world haven’t enough to eat.
A.
． after
B.
． when
C.
． as
D.
． while
【单选题】Some people waste food, ___________ others haven't enough.
A.
as
B.
while
C.
which
D.
where
【简答题】Some people oppose the building of flats because ________. A) the living expenses for each individual family are higher B) it involves higher cost compared with the building of houses C) they believe ...
【单选题】This article shows that ______.
A.
some people are trying to solve their waste problems
B.
the government is not concerned with the problem of wastes
C.
recovered materials won't be able to compete with new materials
D.
citizens will unwillingly pay the costs of changing the waste system
【单选题】People in some countries waste water______ people in others don’t have enough to drink.
A.
while
B.
because
C.
if
D.
so
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