In order to ______ a good knowledge of English, he gave up his job and went to study in an English training center.

A．require

B．inquire

C．acquire

D．request

客户违约给商业银行带来的债项损失包括两个层面，分别是( )。

A．金融损失和财务损失

B．正常损失和非正常损失

C．实际损失和理论损失

D．经济损失和会计损失