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Julien
2 năm trước
Pascal Có một tin nhắn được mã hóa và giấu trong một xâu văn bản trc khi gửi đi.Quy tắc mã hóa tin nhắn là thay đổi mỗi chữ cái trong tin nhắn thành một chữ cái đứng cách nó k vị trí trong bảng chữ cái tiếng anh (A-Z / 1- 26) theo quy tắc xoay vòng,các ký tự k phải chữ cái thì k thay đổi .Trong xâu có thể có nhiều tin nhắn ,giữa các tin nhắn được ngăn cách nhau bởi dấu #.Biết rằng tin nhắn có độ dài lớn nhất là tin nhắn cần tìm.Nếu có nhiều tin nhắn có cùng chiều dài thì tin nhắn đầu tiên tìm thấy là tin nhắn cần giải mã Yêu cầu:Cho trc 1 xâu S dài k quá 255 ký tự và một số nguyên dương k.Hãy tìm và giải mã tin nhắn được giấu trong xâu S Dữ liệu:Nhập vào từ bàn phím 2 dòng là xâu S và số nguyên dương k VD Bàn phím Màn hình ABC#QBTDBM#123HGF 2 1 Pascal
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VII. Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage. I live in a small village called Northville. There are about 2000 people here. I love the village (23)_________ it is very quiet and life is slow and easy. The village is always clean; people look (24) _________ it with great care. The air is always clean, too. People are much friendlier here than in a city because everyone (25) _________ the others, and if someone has a problem, there are always people who can help. There are only a few things that I don't like about Northville. One thing is that we have not got many things to do in the evening; we haven't got (26) _________ cinemas or theaters. The other thing is that people always talk about (27) _________, and everyone knows what everyone is doing. But I still prefer village life to life in a big city. 23. A. so B. although C. because D. but 24. A. for B. at C. up D. after 25. A. knows B. know C. is knowing D. knew 26. A. little B. some C. any D. few 27. A. others B. other C. another D. one another VIII. Read this passage carefully then choose the best answer to each question below. A TWENTY YEAR- STOLEN BICYCLE Ted Robinson has been worried all the week. Last Tuesday he received a letter from the local police. In the letter the police asked him to meet them at the police station. Ted wondered why the police wanted him, but he went to the station yesterday and now he is not worried any more. At the station he was told by a smiling policeman that they found his bicycle. Five days ago, the policeman told him, the bicycle was picked up in a small village four hundred miles away. They are now sending his bicycle to his home by train. Ted was most surprised when he heard the news. He was amused too, because he never expected the bicycle to be found. It was stolen twenty years ago when Ted was a boy of fifteen. 28. Ted was worried because ____________. A. He received a letter B. He went to police station yesterday C. The police would catch him D. He didn’t know why the police wanted him. 29. The police who talked to Ted was ___________. A. pleasant B. worried C. surprised D. small 30. What did the policeman tell him? A. His bicycle was lost. B. His bicycle was found five days ago. C. He was very surprised. D. He never expected the bicycle to be found. 31. Why was Ted very surprised when he heard the news? A. Because his bicycle was stolen 20 years ago B. Because his bicycle was found when he was a boy of fifteen. C. Because the bicycle was sent to him by train D. Because he thought he would never find the bicycle. 32. Which of the following statements is NOT true? A. The police asked Ted to go to their station. B. Ted is no longer anxious. C. The policeman told Ted the good news yesterday. D. Ted is 25 years old now. IX. Rewrite each of the following sentences, using the word given, keeping its meaning unchanged. 33. Tam lives quite near her grandparents’ house _________________________________________________________ DOESN’T 34. If he doesn’t study hard, he will fail the exam _________________________________________________________ UNLESS 35. She was practicing speaking English. I came into her room. → _______________________________________________________ WHEN 36. We spent a whole day looking for these old pictures. _________________________________________________________TOOK X. Finish the second sentence in such a way that it means the same as the sentence printed before. 37. The water was so cold that the children couldn’t swim in it. -> The water wasn’t _________________________________________________ 38. Do you enjoy listening to music? -> Are you interested ___________________________________________? 39. The kitchen is darker than the living room. -> The living room ________________________________________ the kitchen. 40. Mr. Ba is the owner of this house. -> This house _____________________________________________________

Read the passage and compelete it with the words given.There are ONE extra words. Always-new-wear-in-disadvantages-with-because In many seconday schools in Britain the wearing of school uniform is compulsory.Some schools argue that there are many(1)....to this system.Most students don't agree(2).....school uniform for anumber of reasons.Firstly,whenyou have to(3)....the same clothes as everyone else you don't have a chance to develop personal taste in the way you dess.Moreover,people who look scruffy usually look scuffy in their unifroms too and you can(4).....think that they come from poor homes because their unifroms are not(5)......or don't fit properly.Lastly ,the main reason why most students don't like school unifroms is(6).....most schools choose such horrible colors and styles that don't suit young people at all.

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