题目

Take care when you are driving, ______ in a snowstorm like this. A . immediately B . especially C . probably 答案：B每节干电池的电压是________ V，家庭照明电路的电压是________ V，人体安全电压是不高于_______V。 A．2；220；36B．1.5；110；24C．1.5；220；36D．2；110；24