They have earned lots of money, so I______ believe that the business is a success.

A．mildly

B．firmly

C．actively

D．tightly

持卡人无须事先在帐户中存款，即可办理支付结算的信用卡是（）。

A、准贷记卡

B、贷记卡

C、转帐卡

D、储值卡