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Earnzem10
2 năm trước
Cho ∆ABC có . Bên ngoài ∆ABC dựng các tam giác đều ABD và ACE. a) Chứng minh D, A, E thẳng hàng. b) Trên tia AE lấy điểm F sao cho EF = AD. Chứng minh tam giác BFC đều.
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1. I (watch) ……………………..…… a science fiction film on TV at 9 .00 tonight. 2. Our teacher says that new technology (make)……………….…. many workers jobless in the future. 3. Look at those clouds . I think it (rain)…………………………………….. 4. If you use robots to do the housework, you (become)…………………….. lazy and you (not get) …………….…….. enough exercise. 5. If people travel to work by bus, there (be) …………………….. fewer car fumes. 6. We’ll need (call)…………………….. him more often 7. This time next week , I (lie)………………….………… on the beach on Phu Quoc Island 8. The river would be cleaner if we (stop) ………………..throwing garbage into it. 9. Since used bottles (recycle) ……………………. , the amount of garbage is reduced . 10. If the trees(be not)……………………….watered daily, they will die. 11. Air pollution (be) ……………… not good for our health. 12. Many houses ( destroy)………………………in the hurricane last night in Nghe An. 13. If the students reviewed all lessons, they (do)……………..…………..the test well. 14. After the thief (leave)…………………….the house, the police (come)…………..………….. 15. He ( not go )……………….. out last night, he ( stay )……………………….. at home. 16. ………..Lan ( learn )……….… English for 2 years ? - No, he ( learn )…………..………. for 3 years. 17. …….you ( wear )………..… uniform yesterday ? No. I ( not wear )……………........ it yesterday. 18. ……...your mother (read)………… book every night ? - No, she ( watch ) …………..………TV. 19. We (save) ………………………………electricity if we didn’t pay much money. 20. If we use water carefully, more people (have) ………………………….. fresh water. 21. That room (paint)………………………………at this time next week. 22. He would be ill if he (smoke) ………………………… a lot. 23. By the time the police (come)….…………….., the thief (leave)……………………… 24. After I (finish)…………………….………..the lesson, Lan went out. 25. This house ( build)…………………….………. in 2015. 26. Deforestation makes lots of species in the forest (die) …………………………. 27. If I were you, I (reuse) ……………………. all the old panels. 28. Our guests (not have) …………………………. to take off their shoes before they get in. 29. They host many festivals annually; therefore, they can (preserve) ……………………. the traditions. 30. The solders (commemorate) …………………………… on War Invalids and Martyrs’Day. Giúp mình giải nha

Since Da Lat was found by Doctor Alexander Yersin(1)__________ 1897, it has become one of Vietnam’s most famous vacation destinations. Da Lat is now the holiday resort for Vietnamese (2)_________ foreign tourists. Located on Langbian highlands, the city is 1,500 meters (3)______ sea level and is 305 km from Ho Chi Minh City. It is very famous for its waterfalls, (4)___________ and especially flower gardens. Many hotels have been built in Da Lat (5)__________ the past few years, but it is still difficult (6)________ accommodation at busy times. The name Da Lat comes from the tribal people in the region. It means the streams of Lat people. 1.A on B.in C. at D. to 2.A but B. then C. and D. so 3.A under B. above C. beneath D. opposite 4.A. museums B. stadiums C. lakes D. factories 5.A since B. from C. with D. for 6.A find B. to find C. finding D. found

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