根据购买力平价理论，决定汇率长期趋势的主导因素是( )。
A．国际收支
B．国内外通货膨胀率差异
C．利率
D．总供给与总需求
参考答案：B
One way to stop countries fighting is to cut off their_____ support, for wars are very expensive.[ ]
A. conditional
B. chemical
C. environmental
D. financial
设x=011050，则x=x＆01252的值是( )。
A．0000001000101000
B．1111110100011001
C．0000001011100010
D．1100000000101000
