cau tra loi :

The circumference and area are both rational

VII.

36. are

37. are studying

38. plays

39. is playing

40. stay

VIII.

41. sai đề k nhỉ? these shoes là số nhiều cơ mà, sao lại có does, it, costs đc?

42. C. hang -> hanging (be interested in N/ Ving)

43. B. bookshelf-> bookshelves

IX.

44. C

45. B

Vì bài trên ko có đề nên mik ko thể giúp bạn nha. Sorry nhiều!!!

     Recycle : rubbish, cans, bottles

    Send : postcards, letters, wishes

   help : the homeless, grandparents,mum, the poor

    visit :grandparents, Ha Long Bay

   Play : balling, table tennis

Tờ 1

41 It's very important to use body language in communication

42 Despite her age, she still leads an active life

43 My mother said that you had to decorate the room carefully

44 People recycle old cans to make new ones

45 Tim is always forgetting his homework

46 T

47 F

48 T

49 T

50 F

Tờ 2

17 C => hard

18 do => make

19 D => has

20 to go => going

21 A => At

22 B => to

23 C => beautifully

24 D => five-star

25 is => was

V

26 would travel

27 be

28 to buy

29 has spoken

30 Has - just been finished

VI

31 for

32 as

33 about

34 with

35 than

VII

36 development

37 exploration

38 behavior

39 deforestation

40 specialness

Bài 1:

a: TA có: \(\hat{HKC}+\hat{HKD}=180^0\) (hai góc kề bù)

=>\(\hat{HKD}=180^0-65^0=115^0\)

Ta có: \(\hat{MHB}=\hat{HKD}\left(=115^0\right)\)

mà hai góc này là hai góc ở vị trí đồng vị

nên AB//CD

b: PQ⊥CD

AB//CD

Do đó: PQ⊥AB

c: PQ⊥AB

PQ⊥EF

Do đó; AB//EF

số bé : (1852 - 264) : 2 = 794

số lớn : 1852 - 794 = 1058

mềnh k bít làm đâu bạn êy

thử lên gg tìm xem!

1. comfortable 

3. unhealthy

4. illness

1 comfortable

2 differences

3 unhealthy

4 illness

5 explanation

Do \(\dfrac{a}{b}=\dfrac{c}{d}\Rightarrow\dfrac{b}{a}=\dfrac{d}{c}\)

\(\Rightarrow1-\dfrac{b}{a}=1-\dfrac{d}{c}\Rightarrow\dfrac{a-b}{a}=\dfrac{c-d}{c}\) (đpcm)