单项选择题

A．as
B．unless
C．while
D．so
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单项选择题
A．Because it is a personal and economic problem as well as a social one.B．Because it is a totally personal problem.C．Because it is a huge burden on economics.D．Because it is social problem.
A．Because it is a personal and economic problem as well as a social one.
B．Because it is a totally personal problem.
C．Because it is a huge burden on economics.
D．Because it is social problem.
单项选择题
A．momentB．movementC．ideaD．affair
A．moment
B．movement
C．idea
D．affair
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