1. businessman 2. doctor 3. student 4. driver 5. teacher
—How long has the film _______?
—For ten minutes. [ ]
A. began
B. been on
C. begun
2013年年底甲企业盘亏机器一台，原价50000元，已提折旧40000元，变卖废品500元，机器实际损失（）元。
A.10000
B.9500
C.500
D.0
