乔木、灌木及球类等植物材料的质量检查，按数量随机抽查（）
A、1％
B、3％
C、10％
D、20％
参考答案：C
政府往往通过授予某些厂商在指定地区独家经营特许权的方法来进行管理的是( )。
A．基础行业 B．高新技术产业C．公用事业 D．航天技术产业
—Could you tell me_______?
—Sorry, I don't know. I was not at the meeting. [ ]
A. what does he say at the meeting
B. what did he say at the meeting
C. what he says at the meeting
D. what he said at the meeting
