2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20Đ.ÁN B A A A B C...

Câu 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20Đ.Án B A A A B C B A D D C B A D C A D C C B