Tìm m để tập nghiệm của bất phương trình: (m^2 - 1)x^2 + 2(m+1)x + 3 > 0 là R

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TEST2 Rewrite these sentences so that the meaning doesn’t change: 1. “I’m leaving here for Hue tomorrow.” She said. She said …………………………………………………………………… 2. “I must go now.” Said he. He said …………………………………………………………………….. 3. “Do you love playing volleyball, Mai?” Nam saked. Nam asked ………………………………………………………………… 4. “Can you swim, Minh?” asked Lan. Lan asked ………………………………………………………………….. 5. “Where are you working now?” he said to me. He asked me ……………………………………………………………….. 6. “Don’t waste water.” He said to us. He told ……………………………………………………………………… 7. “Please wait for me, Nam.” Le said. Le told ………………………………………………………………………. 8. “Why do you come here late?” she asked me. She asked me ………………………………………………………………... 9. “Would you like to come to the beach?” she said to me. She invited me ………………………………………………………………. 10. “Let’s use fewer plastic bags.” He said. He suggested ………………………………………………………………… 11. “I’m having a wonderful time here.” said Mary. Mary said ……………………………………………………………………. 12. “Do you like pop music?” Hoa told Maryam. Hoa asked ……………………………………………………………………. 13. “Are you having a nice day, Minh?” asked Ha. Ha asked ……………………………………………………………………… 14. “You shouldn’t stay up late.” She said to us. She advised …………………………………………………………………… 15. “Can you play the guitar, Hanh?” Hao asked. Hao asked ……………………………………………………………………

I, Multiple-choice: 1, Melodi is an avid artist whose favorite hobbies are _________ and sculpture. A. using paint B. to paint C. painting D. paint 2, Increasing the number of ferry crossings to the island from the mainland had the _________ effect of attracting more visitors. A. desirable B. desired C. desirability D. undesired 3, Such a tremendous noise was _________ in the banqueting-hall that there was little danger of their being overheard. A. happening B. going on C. continuing D. turning out 4, When the area was cleared for mining, the animals that had lived there were _________. A. driven out B. putting out C. continuing D. gotten out 5, As soon as the problem at work blew up, he instantly thought about how he could come out of it looking good. He is such a ____________ person. A. self-evident B. self-conscious C. self-centred D. selfless 6, When will it ____________ us that climate change poses one of the greatest risks to the survival of our planet? A. see that B. considered C. know that D. dawn on 7, Rock and roll in the 1950s was primarily a youth cult, but its lasting importance ____________ in the seismic impact. A. stood B. stayed C. held D. lay 8, His face is used to advertise products with intellectual ____________ from computers to encyclopaedias. A. suppositions B. connotations C. assumptions D. inferences 9, My two cousins were so excited at the start of the war, they ran downtown and ________ up immediately. A. wrote B. signed C. drew D. brought 10, Mathew is increasingly required to present internally to his colleagues ____________ externally to the major shareholders. A. let alone B. not to mention C. besides D. alongside

5. Many tours to Africa have been______ Ebola-hit areas are in West Africa. A. although B. so C. when D. because 6. If you follow these simple rules, ____ will you save money but also the environment will be cleaner. A. only not B. Not C. not only D. not so 7. Public libraries have been ____ to encourage children to read books. A. to open B. opened C. opening D. open 8. They have raised a lot of money to help the poor, ___? A. have they B. do they C. haven and they D. did they 9. Solar energy is being used in some mountainous areas, ______ the national electricity grid still cannot reach. A. which B. in where C. what D. where 10. He was named _____ a famous singer. A. for B. to C. after D. from 11. Iwish that my students _____ to work so much on the farm just to gt to school. A. did have B. has C. had D. were 12. Hoa: "Do you mind if I sit here?" -Lan: "____" A. Congratulations B.That's a good idea C. Please do D. No, thanks 13. I know the man______ is talking to Rita A. who B. when C. which D. whose 14. Can you turn ____ the air conditioner? It's too hot. A. off B. on C. up D. down 15. It takes him five minutes ______ to the post offfice. A. walk B. walking C. walked D. to walk 16. “Shall we go out for a swim?” - "_____" A. Yes, we go B. Yes, let's C. Yes, we can D. Yes, we are 17. If I had enough money, I _____ abroad to improve my English. A. will go B. would go C. should go D. can go 18. You have never read this article on the Wesbsite, ______? A. in you B. do you C. have you D. have you 19. My brother has to go to work _______ it is raing very hard. A. even though B. because C. however D. in spite of 20. She has made a good_____ on everyone in my class. A. impressed B. impressive C. impression D. impress