Viết một câu văn nói về một đêm trăng nơi em ở ??????

match the natural disaster in column A to its definition or meaning in column B dich gium mk nha 1. snow storm C. a sudden, violent shaking of the earth's surface 2. earthquake J .a long period without rain 3. volcanic eruption G.the flames, burning rocks, and lava are thrown out from a volcano 4. typhoon F .a very strong wind that goes quickly around in a circle 5. thunderstorm D . a storm with a lot of rain, thunder and lightning 6. tidal wave E .a violent tropical storm with very strong winds 7. tornado I . a large amount of water that covers an area that was dry before 8. flood A . a very large wave 9. drought B . a storm with a lot of snow and strong winds 10. landslide H .the sudden fall of a mass of earth, rocks,... down the side of a mountain

Cho hệ phương trình x+my=1(I) là tham số mx-3my=2m+3 a, Tìm m để hệ phương trình (I) vô nghiệm? Vô số nghiệm? Có nghiệm duy nhất b, Tìm m để hệ phương trình có nghiệm duy nhất sao cho x^2+y >= 0

9. He stamped ______ until the stinging return to his feet. A. on and off B. out and in C. down and up D. up and down 10. The only way ______ cross the river is ______ swim. A. to / to B. of / by C. on / to D. in / by 11. The summer is over. Pupils and students have to go ______ to school on Monday. A. back B. on C. through D. into 12. He threw stones _____ his attackers, trying to drive them _____. A. to / out B. for / up C. at / away D. at / up 13. The medical center is closed ______ campus. A. to B. up C. for D. with 14. I haven’t gone there _____ ages. A. with B. in C. for D. of 15. Most college football games are played ______ Saturdays. A. at B. in C. with D. On 16. Leaves turn color _______ the autumn. A. for B. on C. at D. in 17. _____ the whole, I enjoy the movie. A. On B. In C. At D. Up 18. She’ll come home ______ April. A. on B. in C. at D. for 19. The art museum is located next _____ the museum of natural history on State Street. A. to B. for C. on D. with 20. Minh was born_____ Ho Chi Minh city. A. on B.at C.in D. up 21. Mai graduated _______ the University of Education. A. from B. at C. in D. for 22. English is spoken in many countries all _____ the world. A. in B. over C. at D. from 23. _______ many areas of the world, wars have made lives more miserable. A. on B. from C. in D. at 24. When we arrived _______ the station, the last train had just gone. A. in B. at C. for D. from 25. Approaching ______ the village, we saw the village common in the distance. A. at B. in C. to D. x 26. Fortunately, the company offered _____ me the job I had applied. A. to B. for C. with D. x 27. The pop singer has always received a large number of letter _____ her fans. A. of B. from C. to D. on 28. She was very surprise _____ the grade she received. A. on B. of C. at D. about 29. I was disappointed ____the grade I received on my last essay. A. for B. about C. to D. A and B 30. Blue grass music is somewhat different ____ other types of country music A.to B. from C. with D. upon 31. I’m not familiar _____that song. A. to B. with C. of D. on 32. We are here to provide you _____ the best service possible. A. of B. with C. to D. for 33. Lan doesn’t spend much money ____ clothes. A. over B. at C. on D. with 34. His computer is not capable _____ running this software. A. to B.on C. of D. about 35. The property was divided equally _____ his son and daughter. A. from B. between C. in D. over

Viết đoạn văn nêu cảm nhận về hình ảnh so sánh a) Tầm hồn tôi là một buổi trưa hè b) Chiếc thuyền nhẹ hăng như con tuấn mã Phăng mái chèo mạnh mẽ vượt Trường Giang c) Tháng giếng ngon như cặp môi gần

cho hbh ABCD ( AB>BC). trên cạch AB lấy E đường thẳng DE cắt cạch CB kéo dài tại N và cắt AC tại M. a) chứng minh ΔAED ≈ ΔBEN b) chứng minh MA.MD=ME.MC C) chứng minh $\frac{1}{DE}$ +$\frac{1}{DN}$= $\frac{1}{DM}$

Ví dụ 2: Tìm m để bất phương trình m²x+3<mx+4 có nghiệm? A. m = l. B. m 0. c. m=0 và m =1 D. Với mọi m thuộc R Ví dụ 3: Điều kiện của m để bất phương trình: (2m+1)x+m-5 lớn hơn bằng 0 nghiệm đúng với mọi x thuộc (0;1) : Giúp mình ví dụ 2, ví dụ 3 với.

Giúp mik phần 2 nha Mik cảm ơn :))

A là hiđrocacbon mạch hở, ở thể khí (đkt), biết 1 mol A tác dụng được tối đa 2 mol Br2 trong dung dịch tạo ra hợp chất B (trong B brom chiếm 88,88% về khối lượng. Vậy A có công thức phân tử là