CẤU TRÚC ĐỀ THI

Phần trắc nghiệm: 12 câu

- Tính chất hóa học, ứng dụng, điều chế oxi.

- Thành phần của không khí.

- Oxi. Phân loại oxit. Gọi tên oxit.

- Phản ứng hóa hợp

- Phản ứng phân hủy.

- Ô nhiễm không khí

- Dập tắt sự cháy.

Phần tự luận: 4 câu

Câu 1: Viết phương trình hóa học liên quan đến tính chất của oxi. Phản ứng phân hủy. Phản ứng hóa hợp.

Câu 2.

1. Lập công thức hóa học của oxit dựa vào hóa trị

2. Ô nhiễm không khí

Câu 3. Tính theo phương trình hóa học

Câu 4. Sự oxi hóa. Sự oxi hóa chậm. Sự cháy. Sự tự bốc cháy

II. Cho dạng đúng của động từ trong ngoặc. ( Give the correct verb forms )

1. Would you mind (open) ______________ the windows. It's so dark inside.

2. Do you mind (wait ) ______________ a moment?

3. Do you mind if I (smoke) ______________ here?

4. Would you mind if I (use) ______________ your handphone?

5. The boy (read) ______________ a book is Ba.

6. The old lamp (make) ______________ in China is five dollars.

7. The window (break) ______________ last night has been repaired.

8. Do you know the man (talk) ______________ to Tom?

9. The man (sit) ______________ next to me was very nervous.

10. He suggested (travel) ______________ around the town by bike.

11. She has a lot of books (write) ______________ in English.

12. She is interested in (listen) __________________ to pop music.

13. We used to (take) ______________ a bus to school when we were young.

14. It's expensive ( travel) _______________ to Nha Trang by plane. Would you mind (go) __________ by train?

15. Do you mind (show) ______________ me the way to the post-office?

16. Would you mind if I (use) ______________ your pen?

17. Do you mind if I (play) ______________ your guitar?

18. Would you mind (turn) ______________ off the television?

19. Do you mind (tell) ______________ me how to write a book report?

20. Would you mind if I (bring) ______________ these flowers home?

21. Do you mind if I (fix) ______________ this broken chair for you ?

22. Would you mind (make) ______________ a birthday cake?

23. My brother is good at ______________ (fix) things.

24. May I ______________ (go) out now , Mom?

25. I want (come) ______________with my mother.

26.The doctor advised me(not smoke) ______________ cigarettes.

27. The boys stopped (play) ______________ football because of the rain.

28. Mai's mother told Mai (correct) ______________ the mistakes in her dictation.

29. Would you like (listen) ______________ to some music?

30. Nam enjoys ( play) ______________ soccer after school.

31. Lan asked me (go) ______________ to the supermarket.

32. I think you should (do) ______________ morning exercises regularly.

33. They used (go) ______________ to work by train.

34. Don’t let children (play) ______________ with matches.

35. You ought to (do) ______________ the homework yourself.

36. My father stopped (smoke) ______________ five years ago.

37. Mai doesn't have enough money (buy) ______________ a new bicycle.

38. I need (buy) ______________ some notebook.

39. My teacher said I should (spend) ______________ more time on my English.

40. Mr Hung told me (tell) ______________ him the truth.

41. Nga likes ( play) ______________ badminton.

42. They asked their children ( stay) ______________ at home.

43. Nam must (do) ______________ the homework himself.

44. My mother decided ( buy) ______________ a house last week.

45. I'd like (buy) ______________ some eggs.

46. The woman (sit) ______________ between Mrs. Hoa and Mrs. Ha is my mother.

47. I enjoy (play) ______________ soccer after school.

48. The doctor advised me (not smoke) ______________ cigarettes.

49. Would you like ( take) ______________ a photo?

50. It is interesting ( study) _____________ English.

GIẢI HỘ MÌNH VỚI . THANKS

Cho tam giác ABC có góc B lớn hơn góc C ,đường cao AH

a) chứng minh AH <1/2(AB+AC)

b) hai đường trung tuyến BM,CN cắt nhau tại G.trên tia đối tia MB lấy điểm E sao cho ME=MG. trên tia đối tia NC lấy điểm F sao cho NF=NG . chứng minh EF=BC

c)đường thẳng AG cắt BC tại K. chứng minh góc AKB>góc AKC

Các bạn giúp mình với. Cảm ơn các bạn nha 😊