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Câu 15 (3,5 điểm ) Cho tam giác ABC vuông tại A, AB< AC, đường cao AH.
a) Chứng minh ABC đồng dạng với HAC.
b) Chứng minh HA = HB.HC                                                                               c) Gọi M, N lần lượt là trung điểm của AB và BC. Chứng minh 4MN2 = HC. BC
d) Đường thẳng vuông góc với BC tại B cắt đường thắng MN tại O. Gọi I là giao điểm của AH vớiCO. Chứng minh I là trung điểm của AH.

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31.I hear it a very good film.

 A. Yes, it is very exciting B. No, I don't hear that C. Yes, it's boring D. Yes, I hear it, too

 32. Many people just sit and ...... T.V all evening. A. look at B. see C. watch d. view

 33. Some students don't like reading books. They prefer ....... computer games. 

A. playing B. to playing C. play D. to play 

34. There are many good programs ............ teenagers. A. on B. to C. for D. with 

35. Which sentence is correct? . ..

 A. I'm going to see a dentist tomorrow. B. I'm going and seeing a dentist tomorrow C. I'm seeing a dentist tomorrow.

 36........... do you like?

 A. What kind programs B. what kinds of programs C. What kinds programs D. What the kind of programs 

37. My friend prefers watching video .. ... 

A. than to listen to musie B. than listening to music c. to listen to music D . to listening to musie 

38. Do you like visiting museums? A. Yes, I do B. Yes, I like C. No. I wouldn't D. I like 

39. Would you like some tea? A. No, I wouldn't B. Yes, I would c. Yes, please D. No, please

40. He plays soccer very ........... A. Well B. good C. excellent D. best

41. Come and ........ badminton, Nam! A. play B. take C. do D. perform

42. He is a fast driver. He drives very......... A. fastly B. fastness C. too fast D. fast

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22. Yes, please. Can I have ....? I'm thirsty.

 A. water glass B. tea cupC . a lemonade D. a glass of leomnade 

23. I don't think I can go out with you now. I ........clean my room. A. had to B. should C. can D. ought

 24. There are different sports activities at my school but I onnly take part ......... jogging, A. on B. at C. in D. with

 25. We'll take a walk instead ........ riding a bicycle. A. of B. off c. for d. with

 26. .......... is a fun, easy and inexpensive activity. A. walking B. the walking C. to walk D. walking 

27. He's very busy now. He doesn't think he ..... do that job. A. can not B. can C. can't D. can hardly 

28. We can learn more about the undersea world ......... Jacques Countea's invention. A. thanks to B. thankful to C. thanking to D. with thank to 

29. Do you like pop music? A. yes, I would B. Yes, a lot C. I like It D. yes, just a little

 30. Would you like to go to the movies tomorrow? A. Yes, I do

B. Yes, I like C. Yes, I would like D. I'd love to

 31. I hear it' a very good film. A. Yes, it is very exciting B. No, I don't hear that C. Yes, it's boring D. Yes, I hear it, too 

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