继发性肝癌最常见的形态学类型是哪种（）
A.块状型
B.小癌型
C.弥漫型
D.结节型
E.巨块型
参考答案：C
(2012·辽宁高考)This machine is very easy ________. Anybody can learn to use it in a few minutes.
A．operating
B．to be operating
C．operated
D．to operate
—Did you enjoy yourself last weekend, Tom?
—Yes, as you know, ______ birthday party went on in _____ most pleasant atmosphere.
A．the; the
B．a; the
C．the; a
D．a; a
