我国的国家标准、行业标准分为强制性标准和推荐性标准。
参考答案：对
— I think George doesn't really care for TV plays.
— Right, _____ he still watches the program. [ ]
A. and
B. but
C. or
D. so
角色游戏和表演游戏的相同点和不同点？
