49岁，男性，患急性前壁心肌梗死，溶栓后1小时突然心悸、晕厥伴抽搐，ECG宽大畸形QRS波，频率166次/分，可见心室夺获，治疗首选

A．利多卡因静注
B．体外同步直流电复律
C．西地兰静注
D．异搏定静注
E．硝酸甘油静点

According to some scientists, the computer will do much harm to people''s health as smoking and drugs do.

A．does much harm ... smoking

B．will do as much harm ... cigarettes

C．will be doing as much harm ... smoking

D．does as much harm ... cigarettes