下列是中国古代的著名战役，其中发生在山西境内的是[ ]

A．长平之战

B．官渡之战

C．赤壁之战

D．淝水之战

Karaoke, which was invented by the Japanese, ______ both wonders and problems.

A．has been produced

B．was produced

C．produced

D．has produced