18A 19D 20D

28.D

29.B

30.B

31.C

32.D

33.A

34.B

35.A

22C

23A

24C

25B

26D

27A

28D

29B

My favourite folk tale names Cinderella. There is Cinderella who is the main character, her two step-sisters and stepmother who are the villains. It's about a beautiful girl by the name of Cinderella lived with her wicked stepmother and step-sisters. She had a really unlucky life unless she met the Prince and they had fallen in love each other. Finally, they had a successful marriage and lived happily ever after. The theme of the story "Cinderella" is that kindness will be rewarded, whereas selfishness will not. The reason why i like this folk tale most it because it gave me a meaningful lesson and it's also romantic, because of the love story of Cinderella and the Prince.
-- pls like for me!! --

1: A=-1/2*xy^3*4x^2y^2=-2x^3y^5

Bậc là 8

Phần biến là x^3;y^5

Hệ số là -2

2:

a: P(x)=3x+4x^4-2x^3+4x^2-x^4-6

=3x^4-2x^3+4x^2+3x-6

Q(x)=2x^4+4x^2-2x^3+x^4+3

=3x^4-2x^3+4x^2+3

b: A(x)=P(x)-Q(x)

=3x^4-2x^3+4x^2+3x-6-3x^4+2x^3-4x^2-3

=3x-9

A(x)=0

=>3x-9=0

=>x=3

IX
2. j
3. i
4. f
5. c
6. a
7. h
8. e
9. g
10. d

XI
2. part => parts
3. a => an
4. a => an
5. a => the
6. are => will be (không chắc lắm)
7. taking => take
8. are => is

C. 
Bài 1
1. C
2. B
3. C
4. B

(Nên double-check trước khi chép)