Hey, boys and girls! Stop ____. I have something interesting to tell you.
A:to talk
B:to talking
C:talks
D:talking
顶端优势现象的原因是( )
清代前朝实行“闭关锁国”政策是指( )
央视的《中国汉字听写大会》首播后就登顶微博热门话题榜,随即全国兴起了“国学热”这是因为( )