người ta dùng cân có hai cánh tay đòn không bằng nhau để cân một vật. Vật được đặt lần lượt ở hai đĩa cân, lần thứ nhất cân thăng bằng khi ở đĩa cân bên kia các quả cân có tổng khối lượng 11,52kg, còn lần sau các quả cân có tổng khối lượng 12,5kg. Tính khối lượng đúng một vật.

Để đi từ A đến B có thể dùng các phương tiện: máy bay, ô tô, xe lửa. Vận tốc của máy bay, ô tô, xe lửa tỉ lệ với 6;2;1. Biết rằng thời gian đi từA đến B bằng máy bay ít hơn so với đi bằng ô tô là 6 giờ. Hỏi thời gian xe lửa đi quãng đường AB là bao lâu?

They agreed to call off the strike on chấm chấm chấm that all those who had been dismissed were reinstated

a.terms      b.demand       c.request            d.condition

làm nhanh tui vote

 Read the following passage and mark the A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.

Dan and Jenifer were (26) ___ their wedding. Before the big (27) ___,they bought a (28) ___, house with big trees all around and were busy repairing it - (29) ___ the walls and cleaning the floors. There were a little workshop nearby, Jenifer hung her beautiful white (30) ___ there to keep it clean.

Three days ago before the wedding, while Dan and Jenifer were at his family's home, a wild tornado (31) ___ from nowhere. The tornado missed his family's home, but when Dan drove to his house, it was not there. The trees (32) ___ the neighbor's house were gone. The tornado destroyed (33) ___ everything in the neighborhood. Just one thing was (34) ___ standing- the workshop. When Dan looked inside, he discovered the wedding dress untouched. He called Jenifer, “Your dress is here!“ I think your wedding is meant to be.“ The lucky (35) ___ cried at their wedding. “They're grateful to be here,“ explained a friend.

26) A.planned B.to plan. C.plan. D.planning

27) A.festival B.anniversary C.day D.party

28) A.50-year-old B.50-year-olds C.50-old-year D.50-years-old D. fixed

29) A.fixing. B.to fix. C.fix. D.fixed

30) A.skirt B.wedding dress C.dress D.fixed

31) A. blown B.came out C.flew D.left

32) A.as well B.as well as C.from D.but

33) A.almost B.except C.with D.all

34) A.never B.there C.still D.also

35) A.people B.guests C.couple D.invitees

Chọn và giải thích đáp án chọn giúp mình với:

1. When I last saw him, he ... in London

A. has lived B. is living C. was living D.has been living

2. Jack ... the door

A. has just painted B.paint C. will have painted D.painting

3. He has been selling motorbikes ________.

A. ten years ago B. since ten years

C. for ten years ago D. for ten years

4. Christopher Columbus _______ American more than 500 years ago.

A. discovered B. has discovered

C. had discovered D. had been discovering

5. He fell down when he ______ towards the church.

A. run B. runs C. was running D. had run

6. We _______ there when our father died.

A. still lived B. lived still C. was still lived D. was still living

7. They ______ table tennis when their father comes back home.

A. will play B. will be playing C. play D. would play

8. By Christmas, I _______ for Mr. Smith for six years.

A. will have been working B. will work

C. have been working D. will be working

9. I ______ to New York three times this year.

A. have been B. was C. were D. had been

10. I'll come and see you before I _______ for the States.

A. leave B. will leave C. have left D. shall leave

11. The little girl asked what _______ to her friend.

A. has happened B. happened

C. had happened D. would have been happened

12. John ______ a book when I saw him.

A. is reading B. read C. was reading D. reading

13. He said he _______ return later.

A. will B. would C. can D. would be

14. I have been waiting for you ______.

A. since early morning B. since 9 a. m

C. for two hours D. All are correct

15. Almost everyone _______ for home by the time we arrived.

A. leave B. left C. leaves D. had left

16. By the age of 25, he ______ two famous novels.

A. wrote B. writes C. has written D. had written

17. When her husband was in the army, Mary ______ to him twice a week.

A. was reading B. wrote C. was written D. had written

18. I couldn't cut the grass because the lawn mower ______ a few days previously.

A. broke down B. has been broken

C. had broken down D. breaks down

19. I have never played badminton before. This is the first time I _____ to play.

A. try B. tried C. have tried D. am trying

20. Since _______, I have heard nothing from him.

A. he had left B. he left C. he has left D. he was left

21. By the end of next year, George _______ English for two years.

A. will have learned B. will learn

C. has learned D. would learn

22. The man got out of the car, ________ round to the back and opened the book.

A. walking B. walked C. walks D. walk

23. He will take the dog out for a walk as soon as he ______ dinner.

A. finish B. finishes C. will finish D. finishing

24. I will be glad if he _______ with us.

A. had gone B. did go C. went D. goes

25. Ask her to come and see me when she _______ her work.

A. finish B. has finished C. finished D. finishing

26. Turn off the gas. Don't you see that the kettle ________?

A. boil B. boils C. is boiling D. boiled

27. Tom and Mary ______ for Vietnam tomorrow.

A. leave B. are leaving C. leaving D. are left

28. I ______ to the same barber since last year.

A. am going B. have been going C. go D. had gone

29. Her father ______ when she was a small girl.

A. dies B. died C. has died D. had died

30. Last week, my professor promised that he ________ today.

A. would come B. will come C. comes D. coming

        Chia 1 từ thích hợp để hoàn thành câu 

1, We ................playing table tennis very unteresting because we can meet and firends with interesting people .

2, My brother and I ................the same hobby 

3, I love ...............outboors in my garden to plant flowers and vegetables

4, My father likes ...................his bike in the park at the weekend

5,Tom and peter like water ...................and they go swimming , play water polo and sury tegether a lot 

6, My hobby is collepling .....................because I love reading whenever I have time

7,Why don t you ..............jogging beacause it can help you keep fit ?

                  Giúp mk mhé ! Thanks

I. Choose the underlined word or phrase (marked A, B, C or D) in each sentence that needs correcting.

1. The children are playing boarding games, and their mother is arranging flowers.

A                      B                      C                                 D

2. One of his father's favourite hobbies is playing horse-riding, and he just practises it

A                                                 B             C

twice a month.

 D

3. He started learning how to play the guitar on his elder brother.

A                                     B              C              D

4.Your favourite football match will begin at 3 p.m., so you should arrive there

                                                     A                          B                      C

soon to get a good seat.

D

5. She will attend the judo class next month because she intends to have a long

A                                                        B                           C

vacation in Ho Chi Minh City.

D

6. He loves to listen to classical music, but he spends a little time doing it.

A                                        B           C                             D

7. She didn't enjoy the party very much because she didn't like music and

A                                                   B                                    C

to dance there.

D

8.  She’s 18 and she’s France. She lives in a village near Toulouse. She studies

                                          A               B                                                             C                   

     engineering at university.

D

9.  She has ashort black hair and very dark eyes. She is intelligent and funny, but

A                                        B                                     C                   

 sometimes she’s a bit sad too.

D

10.     She loves music and she likes writing songs. She can plays the guitar very well and

A                                        B           C                   

she has a beautiful voice.

D

II. There is one mistake in each sentence. Underline and correct the mistake.

F. READING

I.  Read the text and choose the correct answer.

     If you enjoy cycling for pleasure, doing it in London can be a shock. There are not enough lanes especially for bikes, and making your way through the traffic can be very risky. But if you have great passion, cycling in London can be exciting, and it is an inexpensive way of keeping fit if you live there. Some cyclists don’t mind spending a lot of money on expensive bikes. However, if you just want a basic bike that is only for occasional use, there are many cheap choices. Several markets have cheap bikes on sale which may not be impressive to look at but should be satisfactory. You should buy a cycling helmet if you want to cycle in London. Wearing a cycling helmet is not compulsory in Britain, but it is a good idea to wear one for protection.

     1. What is the main idea of the passage?

          A. Cycling helmets                            B. Cheap bicycles

          C. Bicycle markets                            D. Cycling in London

     2. According to the passage, cycling in London is

          A. easy                 B. difficult            C. tiring                D. boring

     3. The word “it” in line 3 refers to

          A. cycling   B. passion  C. exc

Ngày Nhà giáo Việt Nam 20/11 gần đến rồi, mìk gửi tặng các pạn bài cảm nghĩ này [mìk làm hổng hay cho lắm, mong mấy pạn thông cảm]:

Thầy, cô giáo là những người dạy dỗ em nên người, cho em biết những điều hay lẽ phải. Chính thầy cô đã đem đến cho em những tri thức, hiiểu biết, vốn văn hóa ứng xử trong cuộc sống. Thầy, cô đối với bản thân em như là người cha, người mẹ thứ hai của mình. Những người cha, người mẹ rất mẫu mực, luôn yêu thương con cái và muốn chúng sau này sẽ thành đạt. "Bao năm tháng trôi qua, bây giờ chúng đã thành công trên con đường đời, không biết chúng có còn nhớ ta không?". Đây là điều mà các thầy, các cô luôn đặt nó làm câu hỏi trong tâm trí của mình. Đây là điều khiến thầy cô phải buồn lòng nhất. Phải làm sao để chúng em luôn nhớ đến thầy, phải làm sao để chúng em luôn nghĩ về cô - những "người lái đò" đã đưa thế hệ trẻ chúng em "cập bến" tương lai...