以下选项中,能用作用户标示符的是
A.viod
B.8_8
C._0_
D.unsigned
参考答案:C
One of my classmates _____ to see me tonight and we'll talk about our school lives. [ ]
A. is coming
B. came
C. are coming
D. has been coming
市场活动的“主题”是()
A.生产
B.分配
C.消费
D.流通