原帖由 Lois 于 2009-2-4 22:39 发表 ; H7 w! ^, j" e1 t/ n# Y) o
you are wrong, and your friend is also wrong., l- K( G! n8 s' Y- O4 a: B8 D7 D; l
it has always been 1 year.
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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?