电伤分为（）3种。
A、灼伤、烙印和抽筋
B、灼伤、烙印和皮肤金属化
C、灼伤、抽筋和皮肤金属化
D、抽筋、烙印和皮肤金属化
参考答案：B
替马西泮是（）。
A．地西泮的3-羟基活性代谢物
B．奥沙西泮
C．丙戊酸钠
D．羟布宗
E．可待因
We are sure that () to do this face to face, he would find it difficult to express himself without losing his temper.
A. were he to try
B. would he try
C. was he trying
D. if he tries
