防伪税控系统，发票发售子系统，发票退回下可按照哪种方式退票（）
A.税控设备退票
B.发票发售
C.发票撤销
D.手工退票
参考答案：A, D
— Have you heard of that?Tom recently bought a new car and an expensive flat.
— ________? He even couldn’t have enough money to pay for the rent.
A．How about
B．Why not
C．How come
D．So what
导税员应定期巡查办税服务厅下列情况（），确保办税服务工作正常开展。
A.便民服务用品
B.涉税表证单书
C.服务设施
D.机器设备
