Now the air in our town is __ than before.

Yes. Something must be done to stop the pollution.

A．even worse

B．rather bad

C．very good

D．much better

电子商业汇票签约，操作员应在电子商业汇票系统中选择（），点击“新增签约”，依据客户申请资料输入签约客户的信息，核对信息资料无误后点击提交。

A.申请出票

B.业务办理

C.业务签约

D.出票签约