Câu 1: Trên thanh nam châm, chỗ nào hút sắt mạnh nhất? * 1 điểm Cả hai từ cực Phần giữa của thanh Từ cực Bắc Mọi chỗ đều hút sắt mạnh như nhau Câu 2: Khi nào hai thanh nam châm hút nhau * 1 điểm Khi hai cực Bắc để gần nhau. Khi hai cực Nam để gần nhau. Khi cọ sát hai cực cùng tên vào nhau Khi để hai cực khác tên gần nhau Câu 3: Một nam châm vĩnh cửu có đặc tính nào dưới đây? * 1 điểm Có thể hút các vật bằng sắt. Khi bị nung nóng lên thì có thể hút các vụn sắt. Khi bị cọ xát thì hút các vật nhẹ. Một đầu có thể hút, còn đầu kia thì đẩy các vụn sắt. Câu 4: Khi một thanh nam châm thẳng bị gãy làm hai nửa, nhận định nào dưới dây là đúng? * 1 điểm Hai nửa đều mất hết từ tính Mỗi nửa thành một nam châm mới có hai cực từ cùng tên ở hai đầu Một nửa tạo thành một thanh nam châm mới chỉ có một cực từ ở một đầu Mỗi nửa thành một nam châm mới có hai cực từ khác tên ở hai đầu Câu 5: Có hai thanh kim loại A và B bề ngoài giống hệt nhau, trong đó một thanh là nam châm. Làm thế nào để xác định được thanh nào là nam châm ? * 1 điểm Đưa thanh kim loại lên cao rồi thả cho rơi, nếu thanh đó luôn rơi lệch về một cực của Trái Đất thì đó là nam châm. Dùng một sợi chỉ mềm buộc vào giữa thanh kim loại rồi treo lên, nếu khi cân bằng thanh đó luôn nằm theo hướng Bắc Nam thì đó là nam châm. Đưa thanh A lại gần B, nếu A hút B thì A là nam châm. Đưa thanh A lại gần B, nếu A đẩy B thì A là nam châm.

IV. PREPOSITIONS AND PARTICLES

1. It was very nice _________________ you to prepare and serve meals for the homeless.

2. He was very nice _________________ me. He was willing to take care ___________ my house while I was away.

3. “I’ve bought the Christmas tree you wanted.” – “Oh, thanks – that’s really kind ________ you .

4. Should you be kind _____________ him? He will forget your kindness __________ him.

5. Please be considerate _______________ your next-door neighbors. Never turn the TV up after midnight.

6. It was very considerate _______________ him to send her mother a bouquet of flowers ____________ Mother’s Day.

7. Many people decorate their homes ____________ Christmas. They buy Christmas trees and decorate them _________________ electric lights and ornaments.

8. Children believe that a fat, jolly man brings gifts____________ Christmas Eve. ________ Christmas morning, they look under the Christmas tree or in their stockings ______________ gifts ________________ him.

9. _____________________ Christmas Day, Christians go to church and sing joyful songs.

10. The shops are always crowded ___________________ Christmastime.

11. Would you like to go to Paris with us ____________________ Christmas today?

12. By tradition, people send greetings cards to their relatives and friends ____________ Tet. 13. Tet Trung Thu or the Mid-Autumn Festival is celebrated every year _________________ August 15th.

14. Passover is celebrated _________________ late March or early April.

15. Vietnamese people always have big celebrations ____________________ New Year.

16. Bye. Don’t forget our plans. Let’s see each other ___________________ the New Year.

17. _________________ Easter Sunday, young children receive some small chocolate eggs.

18. Easter egg hunts are popular _____________________ Easter.

19. Bob’s father is different ____________________ Jack’s in character and height.

20. They look much alike. We can’t distinguish one twin __________________ the other.

21. Rita was proud _________________ her success in her youth.

22. Here you are ________ last! I’ve been so worried! Thank goodness you’ve arrived safely. 23. Let me congratulate you _____________________ your excellent exam results.

24. Most girls are afraid ___________________ going out alone _______________ night.

25. We sometimes go to the theatre or the opera _________________ a friend ____________ Sunday nights.

26. It rained heavily _________________________ the night.

27. _______________________ the first night of my stay in Paris, I couldn’t get to sleep.

28. Were you satisfied ______________________ your last Christmas?

29. He was late _____________________ the show due _________________ the traffic jam. 30. This generous present was given _________________ me ________________ my parents ____________________ my 18th birthday.

31. The Youth Cultural House _____________________ Pham Ngoc Thach Street is open ___________________ public holidays.

32. What lessons can you draw _____________________ that serious mistake?

33. I am permitted to stay up late ___________________ late-night horror movies.

34. Do you often fly to Asian countries _____________ business or ____________ pleasure? 35. I have to help mum _____________ her household chores while she is __________ work. 36. Sorry, I have no time to talk to you ____________ the moment – I’m __________a hurry. 37. Thanks ____________ the present! I have always dreamt _____________ a pet goldfish!

38. We will go ________________ a trip ___________________ the museum next week.

39. I wish I could afford to go ______________ a tour ________________ Southern Vietnam.

40. Volunteers are ready to help people ______________ need _______________ being paid.

MN GIÚP TỚ VỚI Ạ

Choose the best answer.

I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

Choose the best answer.

We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

Choose the best answer.

I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.