庄子《逍遥游》中用对待“誉”和“非”的态度来说明“定乎内外之分,辩乎荣辱之境”的境界的两句是“____,____”。
——Taking a walk after supper is really a ____ way.
——____. It keeps us healthy, too.
若方程组3x+y=k+1x+3y=3的解x,y满足0<x+y<1,则k的取值范围是( )