I can well remember that there was a time _____ a deep blue sky,  the song of the birds,  moonlight and flowers could never have kept me spellbound.

A．which

B．where

C．when

D．that

政府直接配置资源，往会（）。

A.抑制市场活力

B.降低资源配置效率

C.提高资源配置效率

D.激发市场活力

E.容易滋生腐败