下列各项中的物质能导电且属于强电解质的是 （ ）
A．固态氯化钠
B．熔融状态的氯化镁
C．氨水
D．冰醋酸
答案：B
The singer and the dancer ____ come to the meeting. [ ]
A. has
B. have
C. are
D. is
手枪
