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thanhnguyentrung947
2 năm trước
Chứng tỏ rằng ko tồn tại các số nguyên x, y,z sao cho:/x-2y/+/4y-5z/+/z-3x/=2011. Giúp mình với!
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Choose the correct answer by circling A, B, C or D. 1. Linda used to morning exercise when she got up early. A. did B. does C. doing D. do 2. My mum the bus to work every day, but I cycle. A. catches B. drives C. goes D. runs 3. You should look right and left when you go the road. A. down B. across C. up D. along 4. Bus is the main public in Viet Nam. A.travel B. tricycle C. transport D. vehicle 5. The play was so boring. , An saw it from beginning to end. A. Therefore B. Despite C. However D. Although 6. She’s sure that they will find the film . A. entertaining B. entertain C. entertainment D. entertained 7. - “Do you like seeing a film?” - “ ” A. No, I don’t like it at all B. Sure. What film shall we see? C. Who is in it? D. I’m sorry, I can’t. 8. being frightened by the images, Lan still liked the film so much. A. In spite B. Despite C. Although D. Nevertheless 9. is La Tomatina celebrated? - Every August. A. Where B. Why C. When D. Which 10. My father liked the of that singer. A. perform B. performer C. performance D. performing 11. Does your bike ever down on the way to school? A. break B. take C. do D. turn 12. I go on foot when I was in primary school. A. used to B. break C. can D. may 13. Give a before you turn left or right. A. sign B. turn C. sound D. signal 14. A lot of dancers go to Rio de Janeiro to the Carnival. A. attend B. join C. perform D. appear 15. the film was gripping, Tom slept from beginning to end. A. Therefore B. Despite C. However D. Although

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