: Một cuộn dây bằng đồng (ρ=1,7.10−8Ωm), chiều dài 400m và tiết diện S = 0,1cm2. Cắt cuộn dây trên ra làm hai đoạn , đoạn thứ nhất dài gấp ba lần đoạn kia, sau đó mắc lần lượt chúng vào hai cực của nguồn điện có hiệu điện thế U = 3,4V. Dòng điện qua mỗi đoạn dây là bao nhiêu?
47. Earning money has always been the thing that pleases him most_____ he
becomes,_______ he is.
A. The more rich/ the more happy B. The richest/ the happiest
C. The richer/ the happier D. Richer and richer/ happier and happier
48. The faster we finish________
A. the sooner we can leave B. we can leave sooner and sooner
C. the sooner can we leave D. we can leave the sooner
49. Of all athletes, Alex is_______
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A. the less qualified B. the less and less qualified
C. the more and more qualified D. the least qualified
50. The climber was seventy miles in the wrong direction and got___________
A. more panicked B. the more panicked
C. more than panicked D. more and more panicked
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dùng cân 500g để cân
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I. Choose the best answer to complete each of the following sentences
1. Villagers are more kind, friendly and warm-hearted than city .
A. dwellers B. foreigners C. beginners D. movers
2. You can see the of the suburbs in Ho Chi Minh City with many apartment
buildings, supermarkets, shopping centres, and schools.
A. urban area B. convenience C. urban sprawl D. living condition
3. Dong Khoi Street is the main shopping street in the of downtown in Ho Chi
Minh City.
A. mind B. heart C. head D. spot
4. It is considered that life in a city is wonderful and .
A. funny B. boring C. enjoyable D. helpful
5. No city in America has monuments and museums into one area as Washington, DC.
A. as much B. such many C. as many D. a few
6. My passport last month, so I will have to get a new one.
A. elapsed B. expired C. ended D. terminated
7. The department is also deeply in various improvement schemes.
A. connected B. entailed C. involved D. implied
8. His answer was so confused that I could hardly make any of it at all.
A. interpretation B. meaning C. intelligibility D. sense
9. The main attraction of the job was that it offered the to do the research.
A. possibility B. proposal C. opportunity D. prospect
10.I wish you’d tell me what I do in this difficult situation.
A. shall B. would C. should D. ought
11.A competitor may submit any number of entries , each one is
accompanied by a packet top.
A. supposing B. notwithstandingC. assuredly D. provided
12.They always kept on good with their next-door neighbours for the children’s sake.
A. friendship B. relations C. will D. terms
13.He earns his living by old paintings.
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A. reviving B. restoring C. reforming D. replenishing
14.Hotel rooms must be by noon, but luggage may be left with the porter.
A. vacated B. evacuated C. abandoned D. left
15.The majority of nurses are women, but in the higher ranks of the medical profession
women are in a .
A. rarity B. minority C. scarcity D. minimum
16.Although he was under no , the shopkeeper replaced the defective battery free of
charge.
A. urgency B. guarantee C. obligation D. insistence
17.Old Mr. Brown’s condition looks very serious and it is doubtful if he will .
A. pull through B. pull up C. pull back D. pull out
18.To be a good short story writer one needs, among other things, a very imagination.
A. vivid B. living C. bright D. sparkling
19.This ticket you to a free meal in our new restaurant.
A. confers B. entitles C. grants D. credits
20.He was completely by the thief’s disguise.
A. taken away B. taken down C. taken in D. taken through
21.This book gives a brief of the history of the castle and details of the art
collection in the main hall.
A. outline B. reference C. article D. research
22.Mark is very set in his ways, but John has a more attitude to life.
A. changeable B. flexible C. moveable D. fluid
23.I’m not serious investor, but I like to in the stock market.
A. splash B. splatter C. paddle D. dabble
24.In all , there will never be a Third World War.
A. odds B. probability C. certainty D. possibilities
25.He had to retire from the match, suffering from a ligament.
A. tom B. broken C. slipped D. sprained
26.You have to be rich to send a child to a private school because the fees are .
A. astrological B. aeronautical C. astronomical D. atmospherical
27.Archaeology is one of the most interesting scientific .
A. divisions B. disciplines C. matters D. compartments
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28.It is doubtful whether the momentum of the peace movement can be .
A. sustained B. supplied C. supported D. subverted
29.Conversations you strike up with travelling acquaintances usually tend to be .
A. imperative B. perverse C. insufficient D. trivial
30.Charles Babbage’s difference engine widely regarded as the of the computer.
A. ancestor B. precursor C. antecedent D. premonition
31. As she did so, her parents became _______
A. the angriest B. the most angry
C. the more angry D. angrier and angrier
32. People should eat_______ and do___________ to reduce the risk of heart disease.
A. less fat/ more exercise B. less and less fat/ the more exercise
C. the less fat/ the more exercise D. fatter/ more exercise
33. He spent a year in India and loves spicy food______ the food is, _______he likes it.
A. The hotter/ the more and more B. The hotter/the more
C. The more and more hot/ the more D. The hottest/ the most
34. Of course you can come to the party_________
A. The more the merrier B. The more and the merrier
C. The more and merrier D. The more and more merrier
35. I feel___________ I did yesterday.
A. much more tired than B. many more tired than
C. as many tired as D. as more tired as
36. She is_______ a spectator.
A. more an athlete than B. more of an athlete than
C. an athlete more than D. an athlete of more than
37. His house is_________ mine.
A. twice as big as B. as twice big as
C. as two times big as D. as big as twice
38. _______live in Ho Chi Minh City than in the whole of the rest of the country.
A. As much as people B. More people
C. As many as people D. People more
39. It gets............... to understand what the professor has explained.
A. the more difficult B. more difficult than
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C. difficult more and more D. more and more difficult
40. You must drive more slowly in built up areas______ you drive in the city, it is______
that you will have an accident.
A. The faster and faster/ the more
B. The faster/ the more probable
C. The more and more fast/ the more and more probable
D. The more fastly/ the probable
41. The party was_______ I had expected.
A. more a hundred times funny than B. a hundred times funny more than
C. a hundred times funnier than D. a hundred times more funny than
42. He finds physics________ other science subjects.
A. far more difficult than B. many more difficult than
C. too much more difficult than D. more much difficult than
43. ________he drank,________ he became.
A. More/ more violent C. The more/ the more violent
B. The most/ the most violent D. The less/ less violent
44. Mary was_______ of the two sisters.
A. the clever B. as clever as C. the cleverer D. the cleverest
45. French is a_______ language to learn than English is.
A. difficult B. more difficult
C. most difficult D. more and more difficult
46. The cuisine of France is________
A. more famous than that of England B. famous than the cuisine of England
C. more famous than which of England D. as famous than that of England
47. Earning money has always been the thing that pleases him most_____ he
becomes,_______ he is.
A. The more rich/ the more happy B. The richest/ the happiest
C. The richer/ the happier D. Richer and richer/ happier and happier
48. The faster we finish________
A. the sooner we can leave B. we can leave sooner and sooner
C. the sooner can we leave D. we can leave the sooner
49. Of all athletes, Alex is_______
A. the less qualified B. the less and less qualified
C. the more and more qualified D. the least qualified
50. The climber was seventy miles in the wrong direction and got___________
A. more panicked B. the more panicked
C. more than panicked D. more and more panicked