题干
She worries __________,so she often feels much___________.
A： much too, stressed
B： too much, more stressed
C： too many , less stressed
D： a lot, less stressed
答案(点此获取答案解析）
B
2M(g)+N(g) △H>0，平衡状态时（P1>P2）图中y轴是指
