原帖由 Lois 于 2009-2-4 22:39 发表 + h' U" m, i3 V* ?8 c6 V, r9 A+ h
you are wrong, and your friend is also wrong.+ J9 `; s( c! j. s$ i1 j& ]& W
it has always been 1 year.
' J+ Y' H0 g9 m$ t3 Y( |& T 7 v2 b" W8 I* N0 R; F7 C5 vI 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?