Also, EFC is relatively easy to calculated, therefore,

来源: Moon-river 于 2011-02-18 12:14:39 [] [旧帖] [给我悄悄话] 阅读数 : (38 bytes)
本帖于 2011-02-19 09:02:34 时间, 由普通用户 jy101 编辑
回答: Diffrent thought--you know the EFC, right? 由 Moon-river 于 2011-02-18 12:08:45

parents can prepare in advance.

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