机械力破碎矿石的形式有（）种。
A．3
B．4
C．5
参考答案：B
-I haven't heard from Henry for a long time.
-What do you think ________ to him?
A．happening
B．to happen
C．has happened
D．had happened
《卖油郎独占花魁》选自（）
A.《儒林外史》
B.“三言”
C.“二拍”
D.《聊斋志异》
