如今，各种各样的消费卡随处可见，但有些商家在出售了大量消费卡后，要么关门大吉，要么改头换面，致使消费者手中几百元甚至上千元的消费卡成为废品。这表明要规范市场经济秩序，就必须[ ]

A、禁止各种形式的垄断经营

B、加快建立信用监督和失信惩戒制度

C、充分发挥市场调节的基础性作用

D、逐步放开市场，培育市场主体

The work breakdown structure(WBS) used in the classical sense is a practical methodology used for ______.

A) adding activities to the project
B) expanding the scope of the project
C) developing a responsibility matrix for work assignments
D) delineating project work effort into discrete and logical sub-elements