The construction of the two new railway lines   by now.

A．have been completed

B．has been completed

C．has coompleted

D．have completed

“换位思考，与人为善”的实质是[ ]

A．宽厚和容忍，原谅和不计较他人

B．对人守信，对事负责

C．想人所想、理解至上

D．尊重别人，积极沟通