--- Goods imported from abroad are ________ those made in China.

--- Yes. Some of the goods made in our country are of high quality.

A．always as good as

B．always no better than

C．not so well as

D．not always better than

时间数列中的发展水平是指（）

A.总量指标

B.相对指标

C.平均指标

D.以上指标均可