中国石油天然气集团公司的英文缩写是CNPC。
参考答案：对
The old man often advised the young workers on _________the machine and they learned quickly. [ ]
A. to operate
B. how operate
C. how operating
D. how to operate
鲁迅墓在（）。
A.四川北路
B.东江湾路
C.甜爱路
D.山阴路
