若流通中货币必要量为100亿，而银行券发行量达到了200亿，则单位银行券所代表的货币金属价值为( )。
A．1
B．2
C．1/2
D．3/2
参考答案：C
Not knowing his address , she had some difficulty ________ his house.
A．finding
B．to find
C．found
D．find
指导他人建立信息发布制度步骤
