His promise ___ he would marry her when he came back turned out to be a lie, ___ left the girl heart-broken．

A．which; what

B．that; which

C．what; which

D．which ; that

以下关于国际金本位制度的基本特征阐述错误的是( )。

A．本国货币与黄金以固定的价格自由兑换

B．黄金与美元保持固定的兑换比例

C．本国的货币供应量受本国黄金储备的制约

D．黄金能够不受任何限制地自由进出口