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hungvan
2 năm trước
Cho a= 2+2^2+2^3+...+2^2015. a)CMR A/31 có giá trị là một số nguyên. b)Cho B = A+2. Giá trị của B có phải số chính phương ko ? Vì sao?
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Exercise 1. Choose the best answer A, B, C or D complete the sentences. 1. Thach Sanh was very ______ when he let Ly Thong and his mother go back to their hometown. A. selfish B. mean C. generous D. brave 2. The ogre was so ______, and was to catch Thach Sanh with its sharp claws. A. fierce B. mean C. clever D. ugly 3. Thach Sanh was so ______ that he could push back the troops with his magical rice pot. A. kind B. clever C. hard-working D. fast 4. An Tiem was very ______ to move to a deserted island. A. brave B. honest C. kind D. generous 5. Khoai was very ______ , but his landowner was ______. A. lazy - cunning B. clever – brave C.honest - wise D. honest - cunning 6. Tam was a very ______ girl who had to work all day. A. mean B. generous C. hard-working D. lazy 7. Cam was very ______ when she killed the night ingale, cooked it and threw the feathers in the Imperial Garden. A. wicked B. ugly C. honest D. mean 8. Luu Binh was very ______ to invite Duong Le to come and live with him. A. selfish B. kind C. mean D. brave 9. The toad was very ______ because he tried to find way to the heaven to sue God.. A. brave B. kind C. generous D. mean 10. The King was very ______ to allow his daughter, Tien Dung, to travel to the many wonderful places of the kingdom. A. wise B. mean C. kind D. wicked Exercise 2. Read the following passage, and answer the questions below. Duong Lam Village is located in Duong Lam Commune at a 45km distance from Hanoi. It is the birthplace of two kings in the history of Vietnam, Phung Hung and Ngo Quyen, who opened up the long-term self-control and independence period of Vietnam after Bach Dang Victory in the year 938. All houses, gates, village gates and wells are built of laterite creating an architectural complex, a unique village that is typical for villages in the midlands in the North of Vietnam. At present, there are still nearly old 200 houses and many other historical monuments such as Phung Hung Temple, Ngo Quyen Royal Tomb, MongPhu Communal House, Ho Gam Hill at which Phung Hung liked tigers to rescue villagers and the temple at which the diplomat Giang Van Minh is worshiped. 1. Where is Duong Lam village? _________________________________________________ 2. Who were the two kings whose birthplace is Duong Lam Village? __________________________________________________ 3. What is Duong Lam typical for? __________________________________________________ 4. How many old houses are there in Duong Lam? __________________________________________________

31. Minh didn’t go to school yesterday because of his sickness - Because Minh .................................................. 32. You shouldn’t eat too much meat - You’d ................................................................ 33. How heavy is the chicken? - What .................................................................? 34. What’s the matter with you? - (wrong).............................................................? 35. Why were you absent from class last Monday? - Why didn’t .......................................................? 36. Liz thought no fish was more beautiful than the colorful little fish - (the most)......................................................... 37. Long is a bad swimmer - Long swims ...................................................... 38. Mrs. Oanh cooks well - Mrs. Oanh is ...................................................... 39. Ann drives dangerously - Ann is .............................................................. 40. It is not necessary for you to finish the work to day. - You don’t have ................................................. 41. I like roller skating and my brother does, too - (so).................................................................... 42. How much are these rackets? - How much do ...................................................? 43. My school has thirty classrooms - (are).................................................................... 44. Literature interests my brother a lot - (interested)........................................................... 45. Nam like staying at home than going to the zoo - (prefers).............................................................. 46. Let’s visit the beautiful Khmer temples of Angkor Wat this summer - How about ........................................................... 47. Listening to music at home is more interesting than going to the concert - I prefer .................................................................. 48. We didn’t enjoy the trip because of the heavy rain - The heavy rain prevented ....................................... 49. You shouldn’t eat too many candies - You’d .................................................................... 50. He is a slower and more careful driver than I am - He drives .............................................................

51. The visitor spoke so quickly that I couldn’t understand what he said - The visitor spoke too ............................................ 52. Jane found driving on the left difficult - Jane wasn’t used .................................................. 53. How about eating out tonight? - Why don’t we ......................................................? 54. Han is a better swimmer than Lan - Lan can’t swim ..................................................... 55. Can she take care of herself when her mother is away? - Can she look .......................................................? 56. Let’s visit the museum this afternoon - What about our ..................................................? 57. Where can I find the station ? - Could you tell me how .......................................? 58. We took a train to HCM city - We got to ............................................................ 59. It’ll be not necessary for you to go to the meeting next week - You won’t have ................................................... 60. How long was your flight from Ha Noi to Jakarta? - How long did ......................................................? 61. John can cook very well - John is ................................................................ 62. Minh usually works hard - Minh is usually ................................................... 63. I’m not as good at Math as my brother - My brother is .................................................... 64. They won’t be able to come on Saturday - It will be impassible ........................................... 65. Their father got to London by taxi last Monday - Their father took a ............................................ 66. What is your date of birth? - When ............................................................... 67. Remember to do your homework - Don’t.................................................................. 68. Nam is 15 years old and Quang is, too - Nam and Quang ................................................ 69. To learn English is very good - It is .................................................................... 70. We cycle to school every morning. - We go ............................................................... 71. How long is this river? - What is............................................................ 72. We live too far away from our school - We don’t live................................................... 73. She flew to France last year. - She went .......................................................... 74. He is able to speak English to his teacher. - She can............................................................. 75. Be sure to lock the door before you leave. - Don’t................................................................ 76. Shall we go to the zoo? - Let’s ................................................................ 77. Studying English is very necessary. - It is .................................................................. 78. It’s a lovely dinner. - What ................................................................ 79. We have to keep our school clean, green and attractive. - It’s our duty...................................................... 80. He gets to work in one hour. - It takes ..............................................................

My house is bigger than your house - Your house………….................................... The black car is cheaper than the red one. - The red car…………..................................... There is the sink, a tub and a shower in the bathroom. - The bathroom ……........................................ No one in Trung’s class is taller than him. - Trung.............................................................. Do you have a better hat than this? - Is this............................................................. My house is the oldest house on the street. - No houses....................................................... How excellent the girl is! - What.............................................................. It is one – fifty. - It is ten........................................................... What is your address? - Where............................................................ Finding an apartment in a big city is not easy. - It is................................................................ We have a two-month summer vacation. - Our summer vacation lasts............................. Will you please look after the house while we’re away? - Will you please take........................................? Vietnamese students have fewer vacations than American ones. - American students............................................ It takes me about two hours each day to do my homework. - I spend .............................................................. Hoa is a hard student . - Hoa studies........................................................ I get to work in half an hour. - It takes............................................................... Do you have a cheaper computer than this? - Is this ...............................................................? How much is this dictionary? - How much does................................................. It isn’t important for you to finish the work today. - You don’t............................................................. There are over eight hundred stamps in Tim’s collection. - Tim’s collection........................ ............................ How high is the Big Ben Clock Tower? - (height) .............................................................? What is your son’s weight? - (heavy) ............................................................? What is the price of this face mask ? - (cost) ...............................................................? How long is the Mekong River ? - What ..................................................................? How wide is the west Lake ? - What ..................................................................? I never saw the sharks before. - This is .................................................................. 27.I didn’t have a toothache. They didn’t have a toothache - (neither) ............................................................ 28. Mr. Lan should wear gloves to protect his hands - Mr. Lan had better ............................................. 29. Mr. Thanh couldn’t enjoy the meal because of the stomachache - The stomachache prevented ............................. 30. What is your daughter’s age, Mr. Lan ? - How ..................................................................?

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