在重点税源监控中，可以用来评价税源质量的指标有（）。
A.盈亏比
B.销售增值率
C.经营（销售）利润率
D.以上都不对
参考答案：A, B, C
— What made Bill so angry?
—____________. His girl friend promised to come at 8:30, but she hasn’t come yet.
A．Having kept waiting
B．Being kept waiting
C．To be kept waiting
D．He was kept waiting
列车员在列车进出站时，面向站台（）。
A、致注目礼
B、面带微笑
C、敬礼
D、挥手再见
E、部标车
