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hongquan822001
2 năm trước
Giúp mk ạ Chứng tỏ : 1) (a-b+c) - (a+c) = -b 2) ( a+b) - ( b-a ) + c= 2a +c 3) - (a+b-c) + (a-b-c) = -2b 4) a(b+c)- a(b+d) = a(c-d) 5) a(b-c) + a(d+c) =a(b+d) cảm ơn mn mk hứa sẽ vote 5 sao ạ
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C. READING I. Read the following paragraph and complete it which one suitable word in each blank. I was very excited to know that I was going to Australia for a study tour (1) ……… four months. I didn’t think (2) …………… the problems of speaking English until I met my host family. At first, I couldn’t communicate (3) ………… them because my English was so bad. All the eight years I had been learning English wasn’t much used at all because we didn’t have real practice at school. Even (4) …………. my grammar was good, my pronunciation wasn’t. My problem is pronouncing “I’ and “n”. For (5) …………, I wanted to tell them that “I have lots of homework today,” but I said “I have nots of homework today,” so they misunderstood me. My host mum (6) ……….. me a lot by correcting my bad pronunciation. I usually practiced by talking to (7) …………… when I had a shower, so no one could hear me. After four months, my English was (8) …………. Better. Apart from English, I learnt to make my (9) ……….. breakfast and lunch. I had to ride a bicycle to school every day. I went swimming and tried sailing. Sometimes I also tried skiing. It was wonderful. But (10) ……….. most valuable thing was that I learnt to be by myself and to be independent. II. Read the text and answer the questions below In Canada and the United States, one of the most popular days in the year is Halloween. Halloween is on October 31st. It’s a day when some people dress up in strange or unusual costumes. For example, they may dress up to look like an animal, a person from a book or movie or a famous person from history. In some places, children go to school in their Halloween costumes. After dark, many young children put on their costumes and visit their neighbours. They knock on the door and shout “Trick or treat!”, then the neighbours give them some candy or chocolate, and the children go on to the next house. Adults also enjoy dressing up for Halloween. There are usually Halloween parties in the evening and usually there is a prize for the best or most unusual costume. 1. What is one of the most popular days in the year in Canada and the United States? 2. Who do some people dress up to look like on Halloween? 3. What do some children in some places in Canada and the United States wear when they go to school on Halloween? 4. What do many young children do in the Halloween’s evening? 5. What are usually there in the Halloween’s evening? III. Choose the correct word A, B, C or D for each gap to complete the following passage. Ball Games It’s summer and a stadium in the USA is full (1) ……… 40,000 excited fans. Suddenly everyone stands up and sings the American (2) ………. anthem. The game between the New York Yankees and the Boston Red Sox is going to (3) ………… soon. The game? Baseball of course! Modern baseball (4) ………… in the USA and the sport is an important part of American life. Traditionally people go to a game with all their family. It’s very (5) ………, sociable and noisy, and spectators eat, drink and sing during the game. The Yankees and the Red Sox are (6) ………… teams. There are also professional baseball leagues in Asia and Latin America. It’s an Olympic sport, too. In England, a few thousand supporters are sitting in the rain. There aren’t any players on the pitch. They’ll continue the match (7) …………… it stops raining. If it doesn’t stop, neither team will win or lose-it’ll be a draw. What’s the sport? Cricket! Although England is the (8) ……….. of cricket, the places where cricket is most popular are hot and sunny – Australia, South Africa, South Asia and the Caribbean. A cricket match (9) ………. for a long time – sometimes five days – and each day there are breaks for lunch and tea! However, now there is few, faster version of cricket called Twenty20. There’s pop music and the (10) ………. at the ground is more exciting. Some people think that Twenty20 will replace traditional cricket one day. 1. A. in B. on C. of D. up 2. A. national B. nation C. nationality D. nationally 3. A. have B. start C. show D. go 4. A. took B. started C. began D. originated 5. A. interested B. relaxing C. tired D. bored 6. A. profession B. professionally C. professional D. professionalize 7. A. unless B. where C. if D. Though 8. A. home B. place C. area D. house 9. A. carries B. takes C. makes D. lasts 10. A. air B. atmosphere C. feeling D. surroundings Help tớ vơi các cậu!

Câu 1: Đoạn trích Bài học đường đời đầu tiên được trích từ tác phẩm nào? A. Đất rừng phương Nam. B. Dế Mèn phiêu lưu kí. C. Thầy thuốc giỏi cốt nhất ở tấm lòng. D. Những năm tháng cuộc đời. Câu 2: Hai nhân vật chính trong đoạn trích trên là ai? A. Mẹ Dế Mèn và Dế Mèn. B. Dế Mèn và chị Cốc. C. Dế Mèn và Dế Choắt. D. Chị Cốc và Dế Choắt. Câu 3: Câu nào dưới đây không nói về tác phẩm Dế Mèn phiêu lưu kí? A. Đây là tác phẩm đặc sắc và nổi bật nhất của của Tô Hoài viết về loài vật. B. Tác phẩm gồm có 10 chương, kể về những chuyến phiêu lưu đầy thú vị của Dế Mèn qua thế giới những loài vật nhỏ bé. C. Tác phẩm được in lần đầu tiên năm 1941. D. Tác phẩm viết dành tặng cho các bậc cha mẹ.

Ex2. Rewrite these sentences as directed: .1 My father hasn’t driven a car beforeIt’s ____________________________________________________ 2. She has never been to the ballet dancing beforeThis is ___________________________________________________ 3. I went over my lesson and then went to schoolBefore 4 Before he watched TV, he had done all his exercisesAfter _____________________________________________________ 5. My teacher is the most generous person I’ve ever metI’ve never ________________________________________________ _6. This is the first time I have ever met such a famous personI’ve _____________________________________________________ 7. How long is it since they bought the house?When _________________________________________________ 8. I have never read such an interesting novelThis is __________________________________________________ 9. After he had worked hard many years, he retiredBefore ___________________________________________________ 10. When did you collect stamps?How long ________________________________________________C. Choose the correct answer: 1. I have never seen such an interesting film before .A. This is the fisrt time I have seen such an interesting film. B. This film is the best I have ever seen .C. This is the first time I saw such an interesting film .D. This is the best film that I saw. 2. She hasn’t drunk coca-cola before A. It’s time for her to drink coca-cola B. It’s the first time she has drunk coca-cola C. It’s thefirst time since she drank coca-cola D. It is time she drank coca-cola 3. He had done morning exercises before he had breakfast A. He would do morning exercises before he had breakfast B. After he had done morning exercises, he had breakfast C. After he did morning exercises, he had breakfast D. After he had done morning exercises, he was having breakfast 4. I have never read such a good book before. A. This is the first time I read a good book .B. This is the first time I have read a good book .C. This book is the best I have never read. D. This book is the best I read .5. We had lunch and then went for a walk A. Before we had lunch, we would go for a walk B. After we had lunch, we went for a walk C. After we had had lunch, we went for a walk D. We went for a walk when we had lunch 6. How long have you learnt English? A. When did you learnt English? B. When did you learn English? C. How long is it since you learnt English? D. b & c are correct 7. I’ve never met such an intelligent woman A. This is the first time I haven’t met such an intelligent woman B. It is the first time I’ve ever met such an intelligent woman C. It is the most intelligent woman I’ve ever met D. b & c are correct 8. I have never read such an interesting novel before A. This is the first time I have read such an interesting novel B. This film is the best I have ever read C. This is the first time I read such an interesting nove lD. This is the best novel that I read 9. It’s the coldest winter they’ve ever had A. They’ve ever had such a cold winter B. They’ve ever had such cold winter C. They’ve never had such cold winter D. This is the first time they had such cold winter 10. They travelled across India, and then flew on to Japan A. After they had travelled across India, they flew on to Japan B. Before they had flown on to Japan, they travelled across India C. Before they flew on to Japan, they had travelled across

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