1993年四大天王在人民大会堂同台演出时，共同演绎了青春舞曲？
参考答案：对
电梯俗称VVVF电梯()
A.交流双速调速
B.交流变频变压调速
C.液压
D.直流调速
—What _____ he do?
— He _____ an actor.[ ]
A. is, is
B. does, does
C. does, is
D. is, does
