一件商品原价50元,提价20%后再打九折出售,现价______元.
50×(1+20%)×90%
=50×1.2×0.9
=54(元)
答:现价54元.
故答案为:54.
In my opinion, obviously, night-time is when children can begin to learn to feel confident ______, without being dependent on anyone else.
A.by their own
B.on their own
C.with their own
D.to their own
食道癌切除术后,最严重的并发症是
A.脓胸
B.乳糜胸
C.吻合口瘘
D.吻合口狭窄
E.反流性食管炎