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trethao
2 năm trước
Viết số hữu tỉ a/b=c/d=>a=bc/a,b=ad/c,c=ad/b,d=bc/a dưới dạng một lũy thừa .Nêu tất cả các cách viết
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Choose the suitable prepositions in brackets 1. Ba and Tam usually go fishing........................the weekends. (on, in, from, at) 2. The students will visit the capital.........................the summer. (on, in, at, of) 3. They heard a very strange noise............................midnight. (on, in, at, out) 4. Our little brother took a long nap from 1p.m.........................4p.m. (till, up, between, at) 5. The competitions will take place..........................8a.m and 12a.m. (from, between, up to, to) 6. She talked........................an hour to persuade her parents. (in, for, at, up to) 7. They have learned English..............................many years. (since, for, in, from) 8. The boys often go skiing..........................the winter. (in, at, on, for) 9. I’ve studied French................................3 months. (for, since, in) 10. I arrived.......................the bus stop at 4 in the afternoon. (in, at, on, to)

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