The sports meeting, due to ______ this weekend, has been put off due to the rain these days.

A．being held

B．holding

C．hold

D．be held

对于农副产品的“良好平均品质”(F．A．Q)，其含义为( )。

A．一定时期内某地区生产的商品平均品质水平

B．一定时期内某地区生产的商品品质平均良好

C．一定时期内某地区进口货物平均品质水平

D．一定时期内某地区出口货物平均品质水平