原帖由 Lois 于 2009-2-4 22:39 发表 j- K1 _. d# \3 q2 m, P. }' g, kyou are wrong, and your friend is also wrong. & k7 d {4 t/ D+ _3 eit has always been 1 year.
$ t9 Z# N' X8 ]' O 3 {! ^4 F$ J2 C/ pI read the learner's book 5 years ago, which said one year holding time of class 7 to class 5. Did you take the exam 6 years ago?