【单选题】我国废水治理率在 1990 年代为 ___ 。
【单选题】根据回答,请选择问句。 A. They are building a greenhouse. B. They are building a green house. --- Why are they so keen on green?
A.
They are building a greenhouse.
B.
They are building a green house.
【单选题】既关心顾客又关心销售的推销员属于( )。
【判断题】宗炳的《山水诀》是中国绘画史上最早的一篇山水画论。()