A.20,50%.
B.7,53%.
C.15,04%.
D.8,39%.

A.1 muối và 1 ancol.
B.2 muối và 2 ancol.
C.1 muối và 2 ancol.
D.2 muối và 1 ancol.

A.Giấy đo pH.
B.Dung dịch AgNO3/NH3, to.
C.Giấm.
D.Nước vôi trong.

A.3
B.2
C.4
D.5

A.129,0.
B.171,0.
C.188,1.
D.189,0.

A.2
B.3
C.4
D.5

A.\(0\)
B.\(1\)
C.\(2\)
D.\(3\)

A.Trung Bộ.
B.Nam Bộ.
C.Đồng bằng sông Hồng.
D.Nam Trung Bộ.

A.What children learn about animals at school is often inaccurate.
B.The amount of acquired knowledge about animals at school is adequate.
C.Children's storybooks are an effective way of teaching them about animals.
D.Children's learning about animals at school has the wrong emphasis.

A.Dodgon was an outstanding student.
B.Dodgon attended Christ Church, Oxford.
C.Dodgon was a published author of academic works.
D.Dodgon studied children's literature.