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cho f(x)=sin^2x/x (khi x>0) và x+x^2 (khi x<=o) tính đạo hàm tại 0 mọi ng giúp mk với ạ. Hứa vote

Giữa cây ngô và châu chấu có quan hệ gì

Giúp e với ạ :((( 4. New Zealand is famous for the __________beauty of its mountains and forests. A. scenery B. Scene C. scenic D. scenical 5. Waste from households will gradually ________________the lake. A. contamination B. contaminate C. contaminated D. contaminating 6. Many seabirds were _______________ because of the oil spill. A. die B. dead C. death D. died 7. How long ___¬¬_______ Lan _____________ English? - For 3 years. A. does/ learn B. has / learn C. is/ learning D. Did/ learning 8. I ____________ a science fiction film on TV at 9 .00 tonight. A. watch B. watched C. is watching D. will be watching 9. By the time we got to the cinema, the film _________________ A. started B. starts C. had started D. has started 10. That room ________________________ next week. A.painted B. is painted C. was painted D. will be painted 11. The Internet allows businesses to communicate __________ customers and workers A. with B. to C. for D. at 12. Email allows ________ to send documents, pictures and other data. A. users B. using C. to use D. used 13. The road in front of my office is always _____ when it rains heavily. A. flood B. flooded C. flooding D. to flood 14. The heavy rain has caused _______ in many parts of the country A. flood B. flooded C. flooding D. to flood . 15. Environmental pollution has _____ to lots of health problems. A. taken B. resulted C. caused D. led 16. Water pollution ………… fish and plants die, A. makes B. causes C. leads D. results 17. If the factory _____ dumping poison into the lake, all the fish and other aquatic animals will die. A. continues B. continued C. will continue D. continue 18. He has decided _____ to work in a school in a quite remote area. A. go B. going C. to go D. gone 19. This time tomorrow I _________ an English test on line A. will be having B. will have C. have D. having 20. In Adelaide, south of Australia, the sun …….………….. until 9 p.m in summer

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Làm những câu mk chưa làm và nhớ giải thích

Giúp em với ạ huhu . Tí em thì mất r

Nhanh giải giúp mình đi ạ, sắp vô tiết rồi giải đúng dùm mik nha

Bài về giá trị lớn nhất nhỏ nhất này mình ko hiểu Tại sao lại có 2×3^2 . lấy ở đâu ra vậy các b nhỉ???

Giải gấp giúp mk vs!!! Đg cần gấp