Tính phân tử khối của phân thức hóa học sau: a,K2O b,CaSO4

Bài TA trong kì nghỉ virus corona trường em :((( mong ai đó cứu mị :((

Câu 4 nhé giúp mk cảm ơn rất nhiều

Choose the words whose underlined part is pronounced differently from that of the others in each group. 17. A. other B. thinking C. healthy D. birthday 18. A. Thailand B. weatherman C. anything D. Thanksgiving 19. A. earth B. through C. both D. there 20. A. growth B. three C. feather D. thing 21. A. this B. think C. thank D. thieves 22. A. gather B. bathe C. birthday D. weather 23. A. tooth B. breathe C. through D. earth 24. A. thirty B. than C. therefore D. those 25. A. mouth B. Thursday C. nothing D. worthy 26. A. both B. teeth C. smooth D. fourth 27. A. weather B. wealthy C. clothing D. bathing 28. A. though B. thank C. throw D. thin 29. A. southern B. neither C. thus D. third 30. A. author B. those C. width D. think 31. A. thin B. than C. they D. there 32. A. birthday B. earth C. worth D. there

Bài TA trong kì nghỉ virus corona trường em :((( mong ai đó cứu mị :((

2x+12=3(x-7) các bạn giúp mình với ạ

Bài TA trong kì nghỉ virus corona trường em :((( mong ai đó cứu mị :((

viết 1 bài văn ngắn phát biểu cảm nghĩ về 1 loài cây em yêu, trong đó có sử dụng 1 câu rút gonj và 1 câu đặc biệt và chỉ ra giúp mik vs được quà lớn đó!

Nhận xét và giải thích chế độ nhiệt, chế độ mưa ở vùng khí hậu Nam Trung Bộ và vùng khí hậu Tây Nguyên

18. Only with the help of everybody _______________ . a) can we hope to find her b) could we hoped to find her c) we can hope to find her 19. Never in my life _________________ . a) will I talk her again b) will I talk to her again c) will I talked to her again 20. On no account __________________ . a) must you repeat this b) must repeat you this c) do you must repeat this 21. No sooner had I reached home __________the telephone rang. a) than b) when c) then d) immediately 22. ________ that you were in hospital, I would certainly have visited you there. a) I had known b) Had I known c) If I knew d) Knowing 23. ___________ left the building, when the bomb went off. a) Hardly have we b) If we c) Hardly had we d) Hardly we had 24. Under no circumstances ____________any compromise. a) there can be b) which they can c) like they are d) can there be 25. Only from that student ___________ the truth. a) could I understand b) I understand c) I understand that d) I could understand 26. ________ else can there be a woman like this, so everybody admires her. a) Anywhere b) Somewhere c) Where d) Nowhere 27. At no time ___________ the office without getting permission from my boss. a) I left b) did they b) I didn’t leave c) did I leave 28. Not until the thief left the house, _________him although they were at home. a) they noticed b) they didn’t notice c) didn’t they notice d) did they notice 29). __________ lost in the market, the staff of the shop will help him. a) Were the boy to get b) The little boy gets c) Should the little boy get d) The little boy should 30. Never __________any doubt about the matter. a) there hasn’t been b) hasn’t there been c) there has been d) has there been 31. Not until the end of the 19th century______ become a scientific discipline. A. has plant breeding B. did plant breeding C. plant breeding had D. plant breeding has 32. No longer ……… to do all her housework with her husband because our family now owns some new labour-saving devices. A. my mother has B. has my mother C. does my mother has D.does my mother have 33. In no time ……… know the result of the recognition. A. the public will B. will the public C. the public D. does the public 34. No sooner had he sat down to lunch ……… there was a knock at the door. A. than B. that C. as D. when 35. Never before ……… such a beautiful girl. A. have I met B. have I meet C. I have met D. did I meet 36. Rarely ……... out after 9.00. A. does my sister go B. did my sister go C. my sister goes D. my sister does go 37. Hardly ……… asleep when the phone woke him up. A. the doctor fell B. the doctor had fallen C. did the doctor fall D. had the doctor fallen 38. No sooner ………than the boss came in. A. he had left B. had he left C. he was leaving D. was he leaving 39. Not only ……… to take the medicine, but he also hit the nurse. A. he refused B. does he refuse C. he was refused D. did he refuse 40. Hardly had he left home ……… the telephone rang. A. than B. that C. as D. when 41. Not only ……… the book, but he had seen the film as well. A. he had read B. has he read C. had he read D. he did read 42. No longer ……… them to go to the music club. A. their parents allow B. does their parents allow C. do their parents allow D. has their parents allowed 43. Only because she had to support her family ……… to leave school. A. that Alice decides B. did Alice decide C. does Alice decide D. Alice decided 44. Hardly ……… at the bus stop when the next bus came. A. they had arrived B. do they arrive C. arrived they D. had they arrived 45. So surprised at the news ……… that he couldn’t say anything. A. did he become B. he became C. does he become D. did he became 46. Not only ……… shade and beauty, but they also reduce carbon dioxide. A. trees provide B. provide trees C. do trees provide D. trees do provide