If he ______ his legs in the last training, he ______ in the coming World Cup, which he has been longing

to compete in.[ ]

A. hadn't hurt; would join

B. didn't hurt; would have joined

C. didn't hurt; would join

D. hadn't hurt; would have joined

在利用调值公式法进行动态结算时，首先应（）。

A．确定计算物价指数的品种

B．商定调整因素

C．考查市场价格

D．确定成本要素系数