Thinking that the students were having an evening class, the teacher left the classroom, ______.

A．slowly and gentle

B．slowly and gently

C．slow and gentle

D．slow and gently

审核原始凭证的合法性，包括审核所记录经济业务是否()。

A．违反国家法律法规的情况

B．履行了规定的凭证传递程序

C．履行了规定的凭证审核程序

D．有章污腐败等行为