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a) A= 1.2+2.3+3.4+...+99.100 b) S=3 mũ 10 + 3 mũ 11+ 3 mũ 12 +3 mũ 13+...+ 3 mũ 31
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VI.Fill the words in the table in the gaps: A happy medical called temperature questions filled Yesterday , Hoa had a (1) _____________ check-up in the hospital. She(2) ____________ in her medical record and waited in the waiting room. After a few minutes, the nurse (3)____________ Hoa’s name and took her to the doctor’s office. The doctor asked Hoa a few(4)_______________ Then he weighed Hoa and mesured her height. After that, he took Hoa’s(5)__________________. Next, he checked Hoa’s eyes and ears. Everything was normal. Hoa felt very(6)______________. Went- stopped- didn’t- neither – good- wanted- favorite- some- bought- liked- vegetable B Yesterday , Hoa and her aunt (0)went to the market. First, they went to the meat stall. There was a (1)__________ selection of meat on the stall : chicken, pork and beef. At the meat stall, Hoe didn’t like pork, chichen and(2)_____________ did her aunt. So they (3)__________ some beef. Next they went to the (4)_________________ stall. There was a wide selection of vegetables on display. Hoa (5)____________ some peas and carrots but her aunt (6)_______________. Hoa and her aunt (7)_____________ spinach and cucumbers. They are their (8)______________ vegetables. Finally they (9)_________________ at a fruit stall. They bought (10)____________ oranges. Life- evening –sit- popular- families – today B, In the 1960s, most (1)_______________ in Viet Nam did not have a TV set. People with TVS were (2)______________. In the (3)________________ , the neighbors would (4)______________ around the TV. They would stay until the TV programs finished. Viet Nam is different (5)________________. More families have a TV set and (6)____________ is more comfortable. But neighbors don’t spend each other as well as they did in the past. Spend- as – very - dizzy – arcades- too – young- must D. Millions of (1)____________ people play video games. Some play at home. Others play them in (2)____________. The inventors of the games became very rich. Some of the inventors are (3)__________ young as 14 or 15.These games are very good fun, but players (4)___________ be careful. They should not (5)____________ much time on these games because they can be addictive and tired or (6)___________. Sometimes, players spend (7)_____________much their own time because they like playing video games(8)_________ much. What – stay- variety- must- affects – balanced- moderation- but E. We know that the food we eat(1)_____________ our whole life, so we (2)_____________ remember to eat sensibly. We should have a (3)____________ diet. (4)_____________does a balanced diet mean? It means you eat a (5)______________ of foods without eating too much of anything. (6)_____________ is very important. Eat the food you enjoy , (7)____________ don’t have too much. This will help you (8)__________ fit and healthy.

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