单项选择题

（） compels it, a body at rest will never move.

A．Until a force
B．Not until a force
C．A force
D．Force

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单项选择题
(Unlike) a stock market, a money market -- a network of brokers, buyers, and (selling) – (is not) (located in) a specific place.（）

A．Unlike
B．selling
C．is not
D．located in
单项选择题
Such （） the case, there were no grounds to justify your complaints.

A．was
B．were
C．would be
D．being
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