本币折算成外币时,应用______计算;外币折算成本币时,应用______计算。( )
A.买入价,卖出价
B.中间价,卖出价
C.卖出价,买入价
D.买入价,中间价
参考答案:A
He never speaks to others until ______.
A.he speaks
B.spoken to
C.he is spoken
D.he speaks to
简述国家对农产品购销实行宏观调控的特征。