Some 25,000 people were reported ______ in the ever recorded worst earthquake in Iran, which occurred late this month.

A．were killed

B．to be killed

C．killing

D．to have been killed

手机使用的锂电池是新型的高能电池，以质量小、电容量大而受到重视。某种锂电池的总反应可表示为Li+MnO₂==LiMnO₂。下列说法中正确的是 [     ]

A．LiMnO₂为新型的氧化物

B．LiMnO₂为锂、锰、氧的合金

C．该反应属于化合反应

D．该反应中Mn的化合价没有变化