原帖由 Lois 于 2009-2-4 22:39 发表 & s* ^2 R, O3 l1 o7 a# G: K- S& z
you are wrong, and your friend is also wrong.! Q: R0 j+ d2 g7 F( a
it has always been 1 year.
( m1 `; ]7 m$ r8 {# V: u; ZI 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?