Mọi người giúp mình với ;-; Cần gấp lắm luôn íii
Đại diện của nấm men, nấm sợi, địa y
32. Mr. Hân is going to the USA for his holiday. He ________ up for nearly a year now. A. has saved B. is saving C. saves D. has been saving 33. The carpet ________. A. hasn’t been cleaned yet. B. hasn't cleaned yet. C. have yet been cleaned. D. has cleaned. 34. "Did you have a good time abroad?" - She asked me if ________. A. I have a good time abroad. B. I had good time abroad. C. I had had a good time abroad. D. I have had a good time abroad. 35. ________ this letter ________ last night? A. Is/ writtenB. Is/ wroteC. Was/ writtenD. Were/ written 36. The houses where I used to live ________ very comfortable. A. isB. wasC. areD. were 37. After he ________ English course, he went to England to continue his study. A. will finishB. has finishedC. had finishedD. have been finished 38. I wish I ________ a trip to London last year. A. had takenB. took C. will take D. take 39. He started living here three years ago. A. He lived here three years ago. B. He has lived here for three years. C. He had been living here for three years. D. He had lived here three years ago. 40. Who ________ when I came? A. were you talking toB. are you talking to C. you are talking toD. you were talking to
Gọi P là chu vi hình tam giác có độ dài 3 cạnh là a, b, c. Tìm P biết A. A =5cm, b=10cm, c=12cm B. A=15cm, b=20cm, c=32cm
She fancy (cook). For the family
giúp mình với mình đang cần gấp
2/ Cho cấu hình e của một nguyên tử (A) 1s2 2s2 2p6 3s1 (B) 1s2 2s2 2p6 3s2 3p4 Từ cấu hình nguyên tử hãy xác định a/ Tên nguyên tố b/ Xác định loại nguyên tố c/ Viết kí hiệu nguyên tử của hai nguyên tố trên biết A có 12 notron , B có 16 notron d/ Viết cấu hình điện tử của A+ và cấu hình B2-
Bằng phương pháp hóa học hãy nhận biết các lọ đựng dung dịch không màu gồm: a) HCl; Ba(OH)2; Na2SO4; KCl b) HCl, H2SO4; Ca(OH)2; NaCl c) HCl; HNO3; Ba(OH)2; Na2SO4
Chính xác thôi,ai kinh nghiệm thì làm
1 We began to study English five year ago. -> We have ........................................................................................ 2 I started working for the company a year ago. -> I have ............................................................................................ 3 She started working as a nurse 5 years ago. -> She has ......................................................................................... 4 It started raining half an hour ago. -> It has ............................................................................................. 5 They have lived here for five years. à They started………………………………………………………………………………………
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