Jane was badly taken in when she paid $300 for that second-hand bicycle; it was not worth

A．that all much

B．all that much

C．much all that

D．that much all

安防员上岗时应按公司规定着工装，正确佩戴精神带、肩章、（），衣服不能漏扣、掉扣、工作时不能挽袖、卷裤脚。

A、领带

B、戒指

C、工牌

D、钢笔