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baoanh872002
2 năm trước
Cho 48g Fe Cu tác dụng với H2SO4 đặc, dư thu được 22,4 lít SO2 ở đktc và ddB. a) Tính %kl mỗi kim loại. b) Cô cạn B thu m gam muối. Tính m?
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1. He would get mark 10 if he ________ again the paper. He made one mistake in it. A. read B. is reading C. reads D. will read 2. If I ________ get a car sick, I would go there with you. A. won’t B. don’t C. didn’t D. wouldn’t 3. If he worked harder, he ________ pass the entrance examination. A. will B. would C. is going to D. can 4. If you ________ the front door carefully, the thieves wouldn’t have broken into your house. A. have locked B. locked C. would lock D. had locked 5. He ________ her an opportunity to work in his office if she had had English proficiency. A. would have given B. will have given C. will give D. gives 6. If it ________tomorrow, I will not have to water the garden. A. will rain B. is raining C. rained D. rains 7. Had I known his address, I ________ before. A. would write B. have written C. had written D. would have written 8. ________ already busy in August, I would gladly accept your invitation. A. Was I not B. Were I not C. If I am not D. Unless I was not 9. ________ heat from the sun there would be no life on earth. A. Except B. Without C. If there is no D. Despite 10. I won't lend you this money ________ you promise to pay it back. A. if B. unless C. or D. or else 11. Provided that he ________ the car, we ________ able to drive to the country. A. services - are B. services - will be C. will service - will be D. services - would be 12. Without your help, we ________ in such a short time. A. will not do it B. did not do it C. can not have done it D. wouldn't have done it 13. But for his help, I ________ A. would not have succeeded B. had not succeeded C. did not succeed D. have not succeeded 14. I didn't know you were asleep. Otherwise, I ________ so much noise when I came in. A. didn't make B. wouldn't have made C. won't make D. don't make 15. I wish you ________ to me before you went and bought that car. A. spoke B. have spoken C. had spoken D. would have spoken 16. If only he ________ harder, he wouldn’t have lost his job. A. worked B. would work C. had worked D. has worked 17. If only we ________ a car. I’m tired of the bad service of public transport. A. were B. had C. have D. are 18. I wish I ________ so much money when I was in town yesterday. A. wouldn’t have spent B. hadn’t spent C. wouldn’t spend D. didn’t spend 19. If you _________5 minutes late, you won’t be able to get into the examination room. A. will be B. were C. are D. would be 20. If she ____________ English well, she would be offered that job. A. will speak B. speaks C. is speaking D. spoke 21. I miss my friends. I wish my friends ______ here right now. A. were B. would be C. had been D. was 22. If he worked harder, he ______________pass the entrance examination. A. will B. would C. is going to D. can 23. If you ___________ the front door carefully, the thieves wouldn’t have broken into your house. A. have locked B. locked C. would lock D. had locked 24. He _____ her an opportunity to work in his office if she had had English proficiency. A. would have given B. will have given C. will give D. gives 25. If it ______________tomorrow, I will not have to water the garden. A. will rain B. is raining C. rained D. rains 26. Had I known his address, I ____________ before. A. would write B. have written C. had written D. would have written 27. I speak terrible English. I wish I ______ English well. A. spoke B. would speak C. had spoken D. speaks 28. If you had taken my advice, you ____________ in such difficulties now. A. won’t be B. hadn’t been C. wouldn’t be D. wouldn’t have been 29. ____________ anything suspicious arise, please let me know at once. A. Should B. Would C. Can D. Did 30. I went out in the rain and now I have a bad cold. I wish I ______ out. A. didn't go B. wouldn't go C. hadn't gone D. went 31. My friend _______ me at the station if he gets the afternoon off. A. meets B. will meet C. would have met D. would meet 32. ___he___ hard last year, he would have lost the first prize. A. Hadn’t – studied B. Had- studied C. Didn’t study D. If – had studied 33. ___ interested in that subject, I would try to learn more about it. A. Were I B. Should I C. I was D. If I am 34. Unless you ___ all of my questions, I can’t do anything to help you. A. answered B. answer C. would answer D. are answering 35. If he___tickets yesterday, he ___ on the beach now. A. had booked- would be lying B. had booked- would have lied C. booked – would lie D. books- will lie

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