下列哪项是维持生态平衡所采取的积极方法 [ ]
A．任意采伐
B．不采伐
C．完全采伐后再种植
D．边采伐边种植，对林木更新
答案：D
—Pity you missed the lecture on nuclear pollution.
—I________it, but I was busy preparing for a job interview.(2011·福建)
A．attended
B．had attended
C．would attend
D．would have attended
发布进口药广告，应（）
A.无需审查
B.经国家食品药品监督管理局审查
C.经省级药品监督管理部门审查
D.经省级工商行政管理部门审查
E.经国家工商管理总局审查
