会议泛滥成灾，危害有哪些？
参考答案：
时间精力的浪费；经济的浪费；信息的重复浪费；助长不正之风.
—Whom would you like to be your assistant, Jack or David?
—If I had to choose, David would be ____choice.
A．good
B．better
C．the better
D．the best
解释下列词语。
①扣人心弦：
②推崇：
：