By law, the driver was not ________for the accident, so he was not ________ by the police.  [ ]

A. to be blamed; blamed          

B. blamed; to be blamed

C. to blame; to blame            

D. to blame; blamed

不载明于保险合同中，习惯上或社会公认的被保险人应在保险实践中遵守的规则称为 ( )。

A．明示保证

B．默示保证

C．口头承诺

D．承诺保证