Quy đồng : a)-2/21 và 5/24 b)-7/12 và 11/-18 c)-15/45 và -12/60 f)1/3 và -5 nhanh nha mik cần nộp bài lun

Các câu hỏi liên quan

Choose the word (A, B, C or D) whose underlined part is pronounced differently from that of the others from 3 to 4 3. A. bilingual B. dialect C. simmer D. pile-up 4. A. attraction B. exhibition C. multinational D. question Choose the best answer to complete each of the following sentences from 5 to 14 5. My friend, _____bicycle was stolen last week, has decided to buy a motorbike A. whom B. which C. who D. whose 6. Don’t sit too near the screen, ................? A. do you B. do we C. will you D. won't you 7. Tom: “How did you get to the airport?" - John: “…………………” A. I came there last night. B. I came there by train. C. The train is so crowded. D. Is it far from there? 8. You should ………………….. the shoes when coming into the Japanese houses A. take off B. put on C. get off D. take on 9. London is …………far the most popular tourist destination in the world. A. at B. on C. in D. by 10. If I were you, I............. that coat. It’s much too expensive A. bought B. didn't buy C. would buy D. wouldn’t buy 11. I suggest ................ different kinds of waste in different places. A. putting B. puting C put D. to put 12. My sister _________in the bank for five years before she was sent to Da Nang. A. has worked B. was working C. had worked D. works 13. The artisan ______ this statue in bronze. A. moulded B. cast C. carved D. knitted 14 - “ I think we should use less paper so that we can save trees in the forests.” - “ ________”. A. Congratulations B. Yes, I’d love to C. That’s a good idea D. It’s nice of you to say so Mark the letter A, B, C, or D to indicate the word (s) OPPOSITE in meaning to the underlined word(s) from 15 to 16 15. The International Organizations are going to be in a temporary way in the country. A. soak B. permanent C. complicated D. guess 16. There has been no rain for a long time, so land is getting more and more barren. A. wet B. dry C. windy D. hot Mark the letter A, B, C, D to indicate the word or phrase that is CLOSEST in meaning to the underlined part from 15 to 16 17It will be fine tomorrow. But if it should rain tomorrow, the match will be postponed. A. turned off B. put off C. sold off D. taken off 18 In the future, fathers may be externally employed or stay at home and look after their children. . do extra work B. go out to work C. work full-time D. work part-tim