单项选择题
A.free B.compulsory C.free and attendance is required by law D.Both B and C
A.it contributes to the success of individuals B.it contributes to the strengthening of national strength C.it prepares the young people for future development D.Both A and B
A.have been largely achieved B.have largely not been achieved C.have been achieved in some significant areas D.have not been achieved at all