When she returned back by abroad, she told us all about her experience as an illegal immigrant.

A．by

B．back

C．from

D．back from

民事诉讼中下列哪种证据属于间接证据？（）

A．无法与原件、原物核对的复印件、复制品

B．无正当理由未出庭作证的证人证言

C．证明夫妻感情破裂的证据

D．与一方当事人或者代理人有利害关系的证人出具的证言