A:MnO2
B:V2O5
C:Cr2O3
D:WO3
寒冷的冬天,居民楼的玻璃窗上会起“雾”或结“冰花”.下列说法错误的是( )
下列冶炼金属的方法正确的是( )
—Would you mind taking the underground to the theatre tonight?
— .it will take less time than driving a car.