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phuongngoc7523
2 năm trước
1 một hợp chất có công thức RO3.Bết rằng trong hợp chất của nó với hidro có công thức dạng H2R và H chiếm 5,88% khối lượng.Xá đingj R và vết các công thức hóa học trên 2.một hợp chất của nguyên tố R với O có dạng R2O5.Trong hợp chất của R với H có dạng RH3 .Trong đó R chiếm 82,3% khối lượng .Xác định R
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Exercise 1: Rewrite each sentence as a positive, negative, or question: 1. At this time yesterday we (play) __________________ tennis in the schoolyard. 2. At 7:00 pm yesterday they (watch) ________________________ TV. 3. Yesterday while my father (watch) ________ TV, my mother (read) ___________ the newspaper, my sister (do) _____ her homework and I (play) ____ chess with my friend. 4. What were you doing when I phoned you? I (have) ____________________a bath. 5. She (do) __________________________her homework at the time yesterday. 6. Mary (water) ______________________the flowers at 3:00 p.m yesterday. 7. They (visit) __________________________the zoo at ten o’clock yesterday. 8. Peter and I (do) _____________________the exercise at this time last night. 9. Last night my father (feed) ________________________the pigeons at 7:00. 10. At this time last year we (learn) _______________________English in London _ Giúp mình với _

11. His knowledge of history of art is _________ours. A. the same as B. very same as C. like same as D. more same as 12. Their kind of music is _____ mine. A. different with B. so different to C. as different than D. different from 13. Some people think the band's rock and roll songs are very lively. They are _______ some of their gentle old songs. A. the same as B. different from C. not as far as D. as much as 14. I love dancing, and my sister loves it, ________. A. so B. too C. neither D. either 15. He can't play the saxophone, and his brother can't __________ . A. either B. neither C. so D. too 16. No one else in the class plays the guitar John. A. as well B. as far as C. so well as D. as soon as 17. The Brit School is the most famous arts school in Britain. A. performing B. performance C. perform D. performed 18. Jane is not her brother. A. more intelligent as B. intelligent as C. so intelligent as D. so intelligent that 19. Since the 1970s, the festival in Glastonbury has taken almost every year and has grown in size. A. part B. place C. note D. notice 20. He drives as his father does. A. careful as B. more carefully C. the most careful D. carefully as 21. Dong Ho paintings are made on paper with beautiful colors. A. traditional – nature B. tradition - natural C. tradition – nature D. traditional - natural 22. I’ll be there I can. A. sooner as B. no sooner as C. as soon as D. soonest as 23. My village is not it was ten years ago. A. the same as B. the same to C. same as D. the same 24. The villagers are they were years ago. There is no change at all. A. differently from B. not as friendly as C. as friend as D. as friendly as 25. Water puppetry in the 11th century in the villages of the Red River Delta of North Viet Nam. A. originated B. formed C. started D. began 26. The puppet shows present themes of Vietnamese villages. A. city B. urban C. village D. rural 27. No one in my class is beautiful her. A. as – as B. more - as C. as - than D. the - more 28. The group is for their albums and tours around the world. A. well-knows B. know-how C. well-prepared D. well-known 29. Going by train isn’t convenient as going by car. A. so B. as C. more D.A & B are correct. 30. The performances of puppetry show in the countryside and _____. A. everyday life - folk rock B. every day life-folk people C. everyday life - folk tales D. every day life-folk stories ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~` mấy câu này là một bài,yêu cầu mod không đc xoá,nếu xoá là thiếu đấy ko chia nhỏ đc

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