anh chị giúp em vớiiiiiiiiiiiiiiiiiiiiiiiiii

Cầu 5: Tính giá trị của biểu thức: a) A = 2.3 2014.2015 b) Tim n để 2n - 3 chia hết cho n +1

11. If the factory continues dumping poison into the lake, all the fish and other aquatic animals ________________. A. die B. to died C. dead D. will die 12. Water pollution is the ________________ in the lake has made the fish die. A. contaminating B. contaminate C. contaminated D. contamination 13. The Statue of Liberty in New York is a monument which __________ freedom. A. symbolize B. symbolizes C. symbol D. symbols 14. Before the storm hit the village, people _______________. A. evacuate B. evacuates C. had evacuated D.are evacuating 15. Factories _______waste into rivers if the government fines them heavily A. do not dump B. did not dump C. is not dumped D. won’t dump 16. The kangaroo _____________ a symbol of Australia since 1973. A. becomes B. has become C. has been become D. became 17.The earthquake occurred____________ midday when they were having lunch. A. at B. in C. on D. of 18 .We ______any natural disasters before we were trapped in an avalanche last month. A. haven’t experienced B. didn’t experience C. won’t experience D. hadn't experienced 19. What_________ by the time the mudslide occurred? A. had the government done B. has the government done C. did the government do D. is the government done 20. After our plane ……. , we waited for an hour for our luggage. A. had been landed B. has landed C. had landed D. was landing

hòa tan Na2O vào nước thu được 16 (g) NaOH a) Viết PTHH b)tính khôi lượng Na2O đã phản ứng M.N GIÚP E VỚI Ạ

Lập dàn ý chi tiết tả cây hoa đào. Giúp mình với.

Phản ứng thế là phản ứng giữa: * a) kim loại và phi kim b) đơn chất và hợp chất C) kim loại và đơn chất d) 2 đơn chất với nhau e) Cho Zn vào dung

Cho mik hỏi xác định an pha kiểu j v. Bạn nào hiểu kĩ thì trả lời nha. Cảm ơn.

vẽ hộ mk cặp đôi hayato và carlonie sao cute xíu nha

34. Mary countries now allow and encourage women to join the army and the police forces. A. permit B. require C. make D. prevent 35. To an American, success is the result of hard work and self-reliance. A. devotion B. industry C. laziness D. enthusiasm 36. We absolutely adore his music because of sweet melodies and meaningful lyrics. A. favor B. hate C. love D. prefer

nghiệm của phương trình : sinx.cosx=0