Một lượng nước đựng trong bình có nhiệt độ ban đầu 25 độ C, sau khi nhận nhiệt lượng 787,5 kJ thì nước sôi. Biết nhiệt dung riêng của nước là 4200J/kg.K.Hãy tính thể tích nước trong bình? (Biết 1 lít nước tương ứng 1kg)

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47. The issues which have been considered in the previous section (allow/allows) us to speculate on problems that learners might encounter 48. An early analysis of the results (show/shows) that the Socialists have won. 49. The number of students who knew the answer to the last question on the exam (was/were) very low. 50. The United States of America (consists/consist) of 50 separate states. 51. The view of these disciplines (vary/varies) from time to time. 52. The actress, along with her manager,( is/are) going to the party tonight. 53. It was the speaker, not his ideas, that (has/ have) provoked the students to riot. 54. The country’s first general election since it won independence (is/are) to be held next month 55. Mr. Robinson, accompanied by his wife and children, (is/are) arriving tonight. 56. Neither the boys nor Carmen (have/has) seen the film before. 57. John, bringing his girlfriend to see me, (has/have) just arrived. 58. The majority (believe/believes) that we are in no danger. 59. Neither of the French athletes (have,has) won this year 60. Nobody but Ted and Bill (was/were) eager to help 61. Not John but you (was/were) responsible for the error 62. A lot of the pollution (is/are) caused by the paper factory on the edge of the town 63. The secretary and accountant of the company (have/has ) not come yet. 64. Twenty five dollars (seem, seems) too much to pay for this book. 65. To my opinion, living in happiness for 10 years (is/are) not a long time. 66. Physics (study/ studies) mechanics, heat, light, sound and electricity. 67. His silence (mean/ means) that he agrees with us.

Question 1: John doesn't speak English _____________ Peter. A. as well B. as better as C. as well as D. so good as Question 2: The garden looks since _____________ you tidy it up. A. better B. well C. gooder D. as good as Question 3: This one is prettier, but it costs _____________ as that one. A. as much as B. twice as much C. as many D. twice as many Question 4: The house over there is _____________ building in the city. A. the oldest B. the eldest C. older than D. as old as Question 5: Mr David doesn't work here_____________. He left about six months ago A. any more B. any longer C. no longer D. A and B Question 6: I'm sorry I'm late. I got here _________ as I could. A. as fastly B. as fast C. as faster D. so fast Question 7: Your English is improving. It is getting __________ A. good B. well C. better D.good and well Question 8: Ann works __________ than most of her friends. A. harder B. a lot more hardly C. more hardly D. many harder Question 9: You must explain your problems ___________ A. as clear as you can B. as clear as you are C. as clearly as you can D. as clearly as you are Question 10: Nam is __________ student in his class. A. the best B. better C. the good D. best Question 11: John is______________ of the boys. A. taller than B. so tall as C. the tallest D. the most tall Question 12: Jane is not ______________ her brother A. more intelligent as B. so intelligent as C. intelligent as D. so intelligent that Question 13: It is a long journey by train. It is much _______ by road. A. quickly B. more quickly C. quick D. quicker Question 14: Commercial centres are __________ they were many years ago. A. as popular as B. more popular C. most popular D. not as popular as Question 15: The sooner, the ________ A. better B. best C. good D.more good Question 16: It's _______ film I have ever watched. A. best boring B. most boring C. the best boring D. the most boring Question 17: These days, _______people are learning English. A. much and more B. many and many C. more and more D. many and much Question 18: I've never had a ________ meal than that. A. more delicious B. the more delicious C. deliciouser D. most delicious Question 19: This shirt is too small. I need a ________ size. A. large B. larger C. more large D. largest Question 20: Don't walk so_______ . Can't you walk_________? A. fast/slower B. fast/more slowly C. fastly/slower D. fastly/more slowly