Only in this way ______ from your friends.

A．you can learn

B．can you learn

C．can learn you

D．you learn can

人民法院受理破产案件后，债务人对债权人的个别清偿行为应如何处理()

A．一律认定无效

B．均可由其他债权人撤销

C．无效，但是债务人正常生产经营所必需的除外

D．可由其他债权人撤销，但是债务人正常生产经营所必需的除外