Câu 7. Hai nguyên tử A và B có tổng số hạt p,n,e là 106; trong đó số hạt mang điện nhiều hơn số hạt không mang điện là 34. Số hạt mang điện của nguyên tử A nhiều hơn số hạt mang điện của nguyên tử B là 10. Hãy xác định số hạt proton của 2 nguyên tố A và B?

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Giúp em vs ạ 16. Jane started keeping a diary five years ago. => ………………………………………………………………………… 17. They have never had such a cold winter. => …………………………………………………………………………… 18. She hasn’t phoned home for two weeks. => …………………………………………………………………………… 19. She hasn’t written to us since last year. => ……………………………………………………………………………… 20. My father is reading a newspaper. He started 2 hours ago. => …………………………………………………………………………………………………………………………… 21. She hasn’t seen that boy here before. => ……………………………………………………………………………… 22. I have not played football since 2000. => ……………………………………………………………………………… 23. I started working for this company a year ago. => ……………………………………………………………………… 24. We haven’t seen such a cruel mother before. => ……………………………………………………………………… 25. It’s two years since we last saw Mr. Jones. => ……………………………………………………………………… 26. This is the first time I have visited the USA. => ……………………………………………………………………… 27. I have learnt English for 10 years now. => ……………………………………………………………………… 28. She moved to London 20 years ago. => ……………………………………………………………………… 29. The Pikes haven’t visited Paris for 2 years. => ……………………………………………………………………… 30. I stopped writing to him a week ago. => ……………………………………………………………………… 31. Mary has leant French for 6 years. => ……………………………………………………………………… 32. When did your father buy that car? => ……………………………………………………………………… 33. I didn’t see her again for 3 years. => ……………………………………………………………………… 34. The last time I saw John was when he was leaving for Edinburgh. => …………………………………………………………………….………………………………… 35. They haven’t liked ice-cream since they ate too much and was sick. => …………………………………………………………………….………………………………… 36. John’s career as a television presenter began five years ago. 37. My uncle has been a worker in that factory for 10 years. => …………………………………………………………………….………………………………… 38. How long have your family read Tuoi Tre Newspaper? => …………………………………………………………………….………………………………… 39. My old friend started working on that farm in 2005. => …………………………………………………………………….………………………………… 40. When did he start teaching Physical Education in this school? => …………………………………………………………………….…………………………………

*Tóm tắt cuộc hội thoại Unit 2: City life Paul: Hi, Duong! How's it going? Getting over the jet lag? Duong: Yes, I slept pretty well last night. Hey, thanks so much for showing me around today. Paul: No worries, it'll be good fun. Duong: So, are you from around here? Paul: Me? Yes, I was born and grew up here. Sydney's my hometown. Duong: It's fabulous. Is it an ancient city? Paul: No, it's not very old, but it's Australia's biggest city, and the history of our country began here. Duong: Wow! So what are the greatest attractions in Sydney? Paul: Well, its natural features include Sydney Harbour, the Royal National Park, and Bondi Beach. Man-made attractions such as the Royal Botanic Gardens, Sydney Opera House, and the Harbour Bridge are also well known to visitors. Duong: What about transport? Paul: Public transport here is convenient and reliable: you can go by bus, by train, or light rail. Taxis are more expensive, of course. Duong: And is Sydney good for shopping? Paul: Of course! You know, Sydney's a metropolitan and multicultural city, so we have a great variety of things and foods from different countries. I'll take you to Paddington Market later, if you like. Duong: Wonderful. What about education? Are there many universities? Paul: Sydney has five big universities and some smaller ones. The oldest of them was set up in 1850,1 believe. Duong: Oh, it sounds like a good place to get higher education. I like this town! Giúp vs!!!!!!! Mình cần gấp!!!!!!!!!!!!!