衡量一国国际收支是否平衡，主要看()是否达到平衡。

A．自主性交易

B．调节性交易

C．国内交易与国外交易

D．官方交易与私人交易

Construction is expanding all over China, no doubt many materials will be needed at a very big amount in future.

A．China, no doubt many materials will be needed for a very big amount

B．China, no doubt many materials will be needed in a very big amount

C．China; no doubt many materials will be needed in large amounts

D．China; no doubt many materials will be needed for large amounts