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Giúp mình giải hệ phương trình bài 5 với ạ giải phương trình : x^2-2x-1= √[(x^2+1).(x+1)]
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ENGLISH 8: REVISION 4 I. Choose the best option to complete the following sentences. (3ms) 1. The teacher said you should work harder........................your English grammar. A. of B. on C. about D. with 2. The scientist and his assistant conducted many........................in the laboratory. A. exhibitions B. inventions C. experiments D. encouragements 3. You must cover........................sockets so that children do not try to put anything into them. A. suitable B. sociable C. immediate D. electrical 4. Revision is really........................in learning English. A. fortunate B. necessary C. greedy D. generous 5. Choose the word that has the underlined part pronounced differently from that of the others. A. heard B. heart C. earn D. earth 6. The teacher told me........................ part in volunteer work. A. take B. taking C. to take D. took 7. The concert was boring. It was........................concert I’d ever seen. A. the most boring B. most boring C. more boring D. the more boring 8. The doctor said he........................stay up late. A. will B. has to C. should D. shouldn’t 9. - Can you help me? A. What can I do for you? B. No, thanks. C. Yes, please D. That’s very kind of you. 10. My father used to live........................a farm when he was young. A. in B. for C. at D. on 11. Some language learners write each word and its use on a small piece of paper and stick it somewhere in their house........................learn it at any time. A. to B. so as to C. in order to D. All are correct. 12. - May I help you? A. Sure. B. No. Thank you. C. No problem. D. Of course. 13. His writing skill ….. a lot since he practiced writing essays frequently. A. will improve B. has improved C. improves D. improved 14. Mai bought a dictionary …. learn words better. A. so that B. so as to C. in order D. all are correct 15. I couldn’t hear clearly because he spoke so ….. A. fast B. quick C. bad D. soft II. Give the correct form of the words given. (0.5m) 1. Social activities aim to help the young develop their public awareness and form their (personal) 2. Nam is an intelligent student. He can do the exercises (easy) 3. His mom seemed …………………….. of him. (pride) 4. You have to …………………….. those English vocabularies every day. (revision) 5. Sit down and make yourselves …………………….. (comfort) III. Read the text. Are the sentences True (T) or False (F). (1.5ms) One of the most important questions that every student asks is how to improve their English. There are probably as many answers to this question as there are people. Each learner has different objectives, and has different ways. Let's begin with the three most important rules to help guide you. You’ll find further ideas below. - The most important rule to remember is that learning English is a process. It takes time, and it takes lots of patience! If you are patient, you will improve your English. - The most important thing to do is to make a plan and follow that plan. Start with your English learning aims, and then make a specific plan to succeed. Patience is the key to improving your English, so go slowly and focus on your aims. You’ll speak English well soon if you keep to the plan. - It’s absolutely necessary that learning English becomes a habit. In other words, you should work on your English every day. It’s not necessary to study grammar every day. 1. One of the most important questions of every student is how to improve their English 2. There are a lot of answers to this question. 3. One of the most necessary rules is that learning English wastes time. 4. Making a plan is the most important thing in learning English. 5. Patience is the key to making your English better. 6. It is really necessary to practice English every day in learning it. IV. Complete the conversation with the sentences A-F. (1.5ms) A. And you? B. Yeah, that sounds good. C. Not bad. D. Shall we meet at 7pm? E. I’m just a bit tired. F. Great. See you there! It’s Friday afternoon. Two friends are in the classroom. They have finished lessons for the week. Ann: Hi Jane. How’s it going? Jane: Good, cheers. You? Ann: (1) Jane: You look a bit sad. What’s up? Ann: Nothing. (2) Jane: What are you up to this weekend? Ann: Not a lot. (3) Jane: Not much. Would you like to go for a drink? Ann: (4) When? Jane: How about Saturday evening? Ann: Good idea. (5) Jane: Excellent. Ann: Let’s meet at Leicester Square outside the tube station. Jane: (6) V. Complete the second sentence so that it has the same meaning as the first one. (1m) 1. My brother usually played tennis two years ago, but now he doesn’t any more. →My brother used 2. My mother said to me: “Don’t get up late.” →My mother told 3. My friend is a clever painter. →My friend paints 4. How about playing chess tonight? →Let’s VI. Write meaningful sentences, using the cues given. (1m) 1. We / be / close friends / since 2010 2. He /good enough /be /this class

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