“剧诗”在哪种文体出现后有了萌动与发展的契机()
A、诗
B、词
C、剧
D、曲
参考答案:D
Whoever leaves the lab last, _____ all the lights are turned off.
A.make sure
B.make sure of
C.be sure
D.be sure of
矿石含泥量的多少对筛分没有影响。