They enjoyed piano.[ ]
A. play
B. playing
C. playing the
D. to play a
答案:C
唐代监属“六学”及旁系“二馆”的名称。
慢性型特发性血小板减少性紫癜患者的血小板计数常在______
A.20×109/L左右 B.50×109/L左右C.80×109/L左右 D.100×109/L左右