启用账簿时应在账簿上签名或盖章的是（ ）
A．单位负责人
B．会计主管和记账人员
C．主管会计工作的负责人
D．总会计师
参考答案：B
The manager _______ the workers how to improve the program since 9 a.m.
A．has told
B．is telling
C．has been telling
D．will have told
击穿
