大黄牡丹汤中冬瓜仁的作用除清肠利湿外，还能（）。
参考答案：泻热破瘀，散结消肿
He _____ go out because the stove was on fire. [ ]
A. may not
B. can't
C. couldn't
D. might not
4x=32，那么16-x=______．
