单项选择题

Her essay was entirely based on data ______ from reliable records.

A.collecting
B.to
B.collected
D.being

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单项选择题

The public demanded that the central government should take measures to ______ the pricesdown.

A.bring
B.put
C.take
D.cut

单项选择题

国际储备需求是指为了获取国际储备而付出一定代价的愿意程度，它是指持有储备和不持有储备的边际成本二者之间的平衡。所以，持有储备的边际成本越高，实际的储备额就会( )

A.增加
B.不变
C.减少
D.不确定