原帖由 Lois 于 2009-2-4 22:39 发表 5 g# j& \0 h+ C6 U; F2 f
you are wrong, and your friend is also wrong. / n$ V! M; p9 M: W7 t4 q' K* z xit has always been 1 year.
/ I; U8 R8 I' a# `% E
( ^0 M4 J" z/ H/ d$ s
I 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?