Cho tam giác ABC cân tại A, đường cao AH = 2cm, BC = 8cm. Đường vuông góc với AC tại C cắt đường thẳng AH ở D. Tính đường kính của đường tròn đi qua các điểm A, B, D, C.

Đã xác định tam giác ACD = tam giác ABD rồi. Và kẻ thêm I là tđ của AD. Nhưng tại sao xét 2 tam giác vuông ABD và ACD lại ra được IA = ID = IC = IB = AD/2 được ạ?

VII. Make questions for underlined words.

1.     They are planting the trees in the garden

.->................................................................................ ......... .........

2. She will visit  Ha Noi  next week.

->........................................................................... ......... ......... ......... ......

3. She often watshes TV at 6. 45  p.m in the evening. >.................................................................................

4. We go to school everyday.    ->......................................................................................................................

5. Tom and Mai are reading a book.          

-> ................................................................................. ......... ......... .......

6. All the buildings in London are old.

 -> .....................................................................................................

7. It is very cold in Sweden in the winter.

 ->..................................................................................................

8. My father was in Ha Noi last month. 

->....................................................................................................

9. She went to the doctor because she was sick.

-> ........................................................................................

10. Nam left home at 7 o'clock yesterday. ->..................................................................................................     

11. My future house will be on the ocean.

->..................................................................................... …………

12. She goes to the fitness center three times a week. ->.....................................................................................

13. They joined the environment project last Sunday. ->.....................................................................................

14.Our class has Geography on Monday.

 >....................................................................................

15.We will travel to the moon by a super car. >....................................................................................

mai mình thi rồi , giúp với

I. Choose the word which has a different sound in the part underlined. (1.0 point)

1. A. delicious                B. like                            C. nice                           D. fine

2. A. extended                B. visited                          C. jumped                             D. started

3. A. picks                     B. spends                         C. follows                   D. cleans

4. A. gather                     B. think                            C. this                         D. although

5. A. hear                       B. speak                           C. clean                        D. beach

nhanh các bạn , mai mình thi rồi

VIII. Give the correct form of verbs.

1.They ________________ in London since 1980 . (live)

2.She ______________________ here for two years.  (work)

3.John ___________________ this job ?  (do)

4.They ___________________in Hanoi from 1970 to 1999 ( not live)

5.You _______________ your book on my desk last night  ? (put)

6.He _________________ English at this school now.  (study)

7.Our present teacher likes ________________ in this city .    (live)

8.Nobody lives in those houses. They ___________________ empty for many years (be)

9.Cindy is in her office. She _____________ (work) until 7 o'clock.

10. My sister _______________ to see my last night (come)

nhanh nha,mai thi rồi , cảm ơn

VII. Make questions for underlined words.

1.     They are planting the trees in the garden

.->................................................................................ ......... .........

2. She will visit  Ha Noi  next week.

->........................................................................... ......... ......... ......... ......

3. She often watshes TV at 6. 45  p.m in the evening. >.................................................................................

4. We go to school everyday.    ->......................................................................................................................

5. Tom and Mai are reading a book.          

-> ................................................................................. ......... ......... .......

6. All the buildings in London are old.

 -> .....................................................................................................

7. It is very cold in Sweden in the winter.

 ->..................................................................................................

8. My father was in Ha Noi last month. 

->....................................................................................................

9. She went to the doctor because she was sick.

-> ........................................................................................

10. Nam left home at 7 o'clock yesterday. ->..................................................................................................     

11. My future house will be on the ocean.

->..................................................................................... …………

12. She goes to the fitness center three times a week. ->.....................................................................................

13. They joined the environment project last Sunday. ->.....................................................................................

14.Our class has Geography on Monday.

 >....................................................................................

15.We will travel to the moon by a super car. >....................................................................................

nhanh nha các bạn , mai thi rồi

VI. Rewrite these sentences without changing their meaning (1 point)

1.She is interested in reading books..

          She likes     ………………

2.We live near the school, but he doesn’t.

      He lives ..................................................................................................................

3.They will probably have robots to do their housework in the future.

       They might................................................................................................................

4.The West Lake is the largest one in Ha Noi.

          No lake       …………………

nhanh nha các bạn ,mai thi rồi

II. Choose the best answer (A,B, C or D) to complete each sentence below (2.0 points)

1. How long does it take to go to the nearest museum? -  “ __________”.

A. No, it isn’t far B. Yes, it is a long way C. I’m sorry, I don’t know D. Why do you ask me?

2. ___________ are you still watching TV? A. Why        B. What  C. Where    D. Who

3. Do you often help your mother to ______ the housework?

A. make                         B. play                           C. do                    D. get

4. What _________ exciting city!

A. a                                B. the                   C. an                    D. A& C

5. My mother cooked noodles for me ________ I was hungry.

A. because            B. and                            C. although                    D. but

nhanh nha các bạn , mình mai thi rồi 

I. Choose the word which has a different sound in the part underlined. (1.0 point)

1. A. delicious                B. like                            C. nice                           D. fine

2. A. extended                B. visited                          C. jumped                             D. started

3. A. picks                     B. spends                         C. follows                   D. cleans

4. A. gather                     B. think                            C. this                         D. although

5. A. hear                       B. speak                           C. clean                        D. beach

nhanh nha các bạn