日常生活中的下列变化，只发生了物理变化的是[ ]
A．蔬菜腐烂
B．面包发霉
C．灯泡通电后发亮
D．菜刀生锈
答案：C
The couple __________in 1990, but happily they reunited on the Valentine’s day.
A. broke up B broke down C. broke out D. broke into
字符D的ASCII码是：（）
A.44
B.44H
C.64
D.64H
