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nguyenvanlg1
2 năm trước
để điều chế kim loại Fe ta dùng Fe3O4 phản ứng với khí nào sau đây và đun nóng? A. khí oxi B. KHí Hidro C. cả A và B D. ko phải A và B
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chi tieets ra ooj minhf minhf vote 5s cho a Choose the word that has the underlined (letters) pronounced differently from the others. 1. A. sureB. tourC. actualD. group 2. A. clearB. hear C. heart D. Tide 3. A. squareB. areC. shareD. rare Choose the best answer:4. You've been coughing a lot lately. You___________ smoke so much 4.A. shouldn't B. can't C. should D. can 5. If you exercised more, you ___________ feel better. A. don’tB. didn’t C.willD.would 6. If I lived nearer the centre , I ............always late.A. wouldn’t beB. can beC. won’t be D. will be. 7. If I ___________ in your position, I would not accept her offer.A. amB. wereC. would be D. had been 8. What would you do if you___________ a million dollars?A. winB.wonC. had won D.will Win 9. What would Lan do if she ..............the Miss world.A. would beB. will beC. wereD. is. 10. I would be very surprised if he.......................................A. refusesB. refusedC. had refusedD. would refuse. 11. Many people would be out of work if that factory...........down.A. closesB. had closedC. closedD. would close. 12. If she sold her car, she ............................. much money.A. getsB. would have gotC. will getD. would 13. They would be disappointed if we........................................A. hadn’t comeB. wouldn’t comeC. don’t comeD. didn’t come

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