解答:$55 賣了$60 = 赚了5tvb now,tvbnow,bttvb U0 J; O& z! S Y4 \. Q: t1 x; d
又以$62買回花瓶($62 - $5 = 花瓶的本钱= $57)
, A; E& f! @# j! b9 N! Rtvb now,tvbnow,bttvb 再以$68賣出, $68 - $57= $11
5 ~/ N* p& Z7 `4 w4 s3 q& ^www2.tvboxnow.com $11
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