—John sings so well. Has he ever been framed?

—No. He learns all by himself. He _____ goes to any training class. [ ]

A. usually

B. often

C. never

D. even

在中国有一座城市，它为近代中国第一个不平等条约冠上了自己的名字而受辱，它为抗战时期日军在这里屠杀三十万中国军民的罪行而饮恨，它就是

A．北京

B．上海

C．广州

D．南京