Cho đường tròn (O; R) đường kính AB và C thuộc đường tròn (O) (C khác A,B) . Kẻ CH ^ AB tại H. Tiếp tuyến tại A và tiếp tuyến tại C của đường tròn (O) cắt nhau tại M. Gọi I là giao điểm của MO và AC. Chứng minh rằng:

a) OI.OM = R²

b) O, I, C, H cùng nằm trên một đường tròn. Xác định tâm và bán kính của đường tròn này theo R.

c) M, N, B thẳng hàng (Ở đó, N là trung điểm của CH).

1. If children don’t play sports, they weak and tired.

A. feel B. will feel C. felt D. would feel

2. We haven’t got homework this weekend.

A. some B.any C.a D.the

3. He asked her to marry him but she .

A. carry him out B. turned him down C. took him out D. let him in

4. He wondered to tell the news to his parents.

A. why B.what C. how D. which

5. When he was about your age, he walk 5 kilometers to school every morning.

A. use to B. used to C. be used to D. used

6. What a nice day! I wish I in the park now

A. walk B.could walk C. will walk D. have walked

7. Studies show that having good conflict skills is associated with various positive outcomes.

A. resolutional B. resolving C. resolve D. resolution

9. all our efforts to save the school, the authorities decided to close it.

A. since B. despite C. although D.because

10. My parents always criticize me for not getting good grades at school. I wish they could put themselves in my .

A. pants B. legs C. hands D. shoes

11. “ In the past, marriages used to be arranged by parents.”

“ “

A. Sure. That’s right. B. I suppose it was.

C. Really? I can’t imagine that D. That’s cool!

12. The weather was in England than in Spain last week.

A. most warmer B. much warmer C. by far warmer D. more warmer

13. I suggest you Ha Long Bay. It’s very picturesque.

A. to visit B. visiting C. visited D. should visit

14. It that Po Nagar Cham Towers were built in the 8th century.

A. considered B. was considered C. has considered D. considers

15. Choose the word which has a different stress pattern from the others.

A. include B. combine C. remind D. reduce

I. Circle the best word or phrase to complete the following sentences or do as

directed. (2.5 pts)

1. It's good to have someone ………….. you when you are visiting a new place.

A. lead B. take C. guide D. bring

2. Parking is very difficult in …… city centre, so my father always go there by …………

bus.

A. the - Ø B. the - the C. a - a D. a - Ø

3. Today's cities are …………. than cities in previous times.

A. lots larger B. as large C. the largest D. much larger

4. Dan can get…….. in Japannese enough to travel to Tokyo without an interpreter.

A. to B. down C. of D. by

5. Do you want to meet my colleague …….. son is training to be an astronaut?

A. whose B. who C. which D. x

6. If I……… you, I would spend more time improving my pronunciation.

A. are B. will be C. were D. would be

7. A ………… is a piece of rock or other matter from space that has landed on a planet.

A. rocket B. spacecraft C. meteorite D. plane
8. I enjoyed living in London, but it didn’t really …….. up to my expectations.

A. live B. turn C. give D. keep

9. Lots of people choose to buy houses in the suburbs ….... they can avoid the noise and

pollution in the city.

A. although B. so that C. when D. so as

10. Many people move to the city because they enjoy the pleasant and …….. life there.

A. convenience B. convenient C. conveniently D. inconvenient

11. Hoa turned ………. the new job in Paris because she didn't want to move.

A. on B. round C. down D. up

12. My grandfather is the …….. oldest artisan in the village; Ngoc’s grandfather is the

oldest.

A. one B. most C. first D. second

13. If you want to stay slim and healthy, you ……… reduce the amount of fast food you

eat every day.

A. may B. should C. need D. would

14. I would like a ……… of chocolate and two cartons of milk.

A. bunch B. clove C. bar D. head

15. Hi, this is my friend. She's from ……… Philippines .

A. the B. a C. an D. Ø

16. English people often serve salad as a……….

A. start B. starting C. starter D. started

17. The doll has been …………… out of clay.

A. embroidered B. cast C. woven D. moulded

18. Choose the word whose underlined part is pronounced differently:

A. sprinkle B. simmer C. marinate D. slice

19. Choose the word which has a different stress pattern:

A. versatile B. breathtaking C. affordable D. tender

1. Liz prefers writing her private _____ (thoughts/ thinking/ think/ thought) in a diary to posting them on Facebook.

2. Tuan used to buy ice creams and snacks from a street _____ (furniture/ food/ shop/ vendor) when going to the neighborhood every afternoon.
3. Dan thinks it’s _______ (dangerous/ essential/ uncomfortable/ fascinating) to make elevated walkways on busy roads to reduce accidents.

4. Since going by taxi is so expensive, I suggest _____ (to do/ going/ to going/ go) by bus to save money.

5. It’s reported that more and more natural wonders _____ (has damaged/ have been damaging/ have damaged/ have been damaged).

6. My mother used to do _____ (indoor/ indoors/ outdoor/ outdoors) activities in the fresh air like flying kites when she was a child.
7. His father was upset because of his rude behaviors _____ (on/ to/ towards/ forwards) his grandparents.

8. “Do you _____ (get on with/ look forward to/ face up to/ keep up with) your new classmate, or do you two argue?”

9. Lots of people choose to buy houses in the suburbs_____ (although/ when/ so that/ so as) they can avoid the noise and pollution in the city.

10. Choose the word whose underlined part is pronounced differently: (craft / carve / aware/ cast).

11. Choose the one underlined word/ phrase which is grammatically incorrect:

When we are on holiday, we used to go to the beach every day.

A B C D
12. Choose the word which has a different stress pattern: (valuable/ memorable/ historical/ fascinating).

1. If children don’t play sports, they weak and tired.

A. feel B. will feel C. felt D. would feel

2. We haven’t got homework this weekend.

A. some B.any C.a D.the

3. He asked her to marry him but she .

A. carry him out B. turned him down C. took him out D. let him in

4. He wondered to tell the news to his parents.

A. why B.what C. how D. which

5. When he was about your age, he walk 5 kilometers to school every morning.

A. use to B. used to C. be used to D. used

6. What a nice day! I wish I in the park now

A. walk B.could walk C. will walk D. have walked

7. Studies show that having good conflict skills is associated with various positive outcomes.

A. resolutional B. resolving C. resolve D. resolution

9. all our efforts to save the school, the authorities decided to close it.

A. since B. despite C. although D.because

10. My parents always criticize me for not getting good grades at school. I wish they could put themselves in my .

A. pants B. legs C. hands D. shoes

11. “ In the past, marriages used to be arranged by parents.”

“ “

A. Sure. That’s right. B. I suppose it was.

C. Really? I can’t imagine that D. That’s cool!

12. The weather was in England than in Spain last week.

A. most warmer B. much warmer C. by far warmer D. more warmer

13. I suggest you Ha Long Bay. It’s very picturesque.

A. to visit B. visiting C. visited D. should visit

14. It that Po Nagar Cham Towers were built in the 8^th century.

A. considered B. was considered C. has considered D. considers

15. Choose the word which has a different stress pattern from the others.

A. include B. combine C. remind D. reduce