Đơn giản biểu thức dưới đây: C = ( 1 + cot $\alpha$ ) $sin^{3}$ $\alpha$ + ( 1 + tan $\alpha$ ) $cot^{3}$ $\alpha$ Ghi đầy đủ lời giải = ctlhn

Ex 2: Choose the best answer to fill in the blank. 81. How many floors ________ in your school? A. there are B. there has C. are there D. have there 82. She doesn’t have ________friends at school. A. a B. some C. many D. much 83. – “_____________ a nice T-shirt, Trang!” – “Thank you.” A. How B. What C. Which D. It 84. – “_____________ is the most expensive city in the world?” – “I think it’s Tokyo.” A. Which B. Where C. What D. How 85. We should use reusable water bottles………………..plastic ones. A. because B. instead of C. despite D. however 86. What can we do……………….air pollution? A. reduce B. to reduce C. reducing D. to reducing 87. If we use……………….paper, we will save a lot of trees. A. less B. fewer C. more D. much 88. We …………….live in the city in the future. A. will B. won’t C. don’t D. do 89. He will………………..some pictures with his camera. A. takes B. taking C. take D. took 90. If we plant more trees, the air ………………be so polluted. A. will B. won’t C. do D. is

Vẽ chibi nhoa Moaoa có màu ko kí

Chọn 1 trong 2 đề sau Đề 1: vẽ logo BTS x ARMY Đề 2: Vẽ 1 tv trong BTS (chibi hay anime đều đc) Nl: (chỉ là chuyện phiếm, mong ko xoá ;-;) Mn ưi , tui phát hiện thả kẹo chíp vô 7UP hay Sprite uống ngon cực OcO Thử làm kem kẹo chíp vs Sprite hoặc 7UP ik :33

Hòa tan 8,1 gam kim loại Al trong dd H2SO4 0,05M loãng,sau phản ứng thu được dd A và giải phóng H2.Đem toàn bộ lượng H2 sinh ra ở trên đốt cháy trong không khí thì còn 5,6 lít không khí. a)Tính hiệu suất của phản ứng. b)Tính CM của dd A

Ex 2: Choose the best answer to fill in the blank. 71.I think it is a very nice town the weather is good and the people are friendly. A. because B. if C. so D. although 72. This is the first time that I a 3D film. A. watch B. watched C. watches D. have watched 73. I Da Lat three times in all. A. visit B.visited C.visiting D. have visited 74. People must be well-prepared ¬¬they want to climb Mount Everest. A. after B. until C. although D. before 75. I have been to Nha Trang_____How about you? A. one B. two C. two times D. twice 76. My father ________ to Ha Long Bay tomorrow. A. will visit B. visits C. to visit D. are visiting 77. They are going to New York ________ car. A. in B. by C. with D. on 78. ________ they live on the moon in the future? A. Did B. Does C. Do D. Will 79. My sister and I ________ television in the living room now. A. am watching B. are watching C. is watching D. watching 80. ________ do you go to school? . I walk. A. How B. By what C. How many D. How

Mỗi câu 15 điểm, các bạn mỗi người làm 2 câu khác nhau, nhớ chat với nhau để chia câu giúp mình nhé. Bạn nào làm hay hơn mình cho ctlhn>3 #hoahuongduong2170

số gạo có ở hai kho 7380kg gao biết số gạo kho thứ nhất 1/6 tổng số gạo có ở hai kho .tinh số gạo ở mỗi kho

giúp zới đề dễ mà lười ..... nhanh = ctlhn nhaaaaaaaaaaa 50 đ cho 2 bài nhaa

Ex 2: Choose the best answer to fill in the blank. 61. Playing sports helps us get __________. A. free B. fat C. fittest D. fitter 62. My sister often __________ badminton in her free time. A. play B. plays C. playing D. to play 63. Football is regarded __________ the most popular sport in the world. A. for B. as C. like D. of 64. __________ draw on the walls and tables, please? A. Do B. Don’t C. Should D. Shouldn’t 65. I like watching football matches but I am not very good __________ playing football. A. at B. in C. on D. for 66. Last summer, I __________ fishing with my uncle in the afternoon. A. go B. went C. goes D. going 67. The Eiffel tower is the most landmark in the world. A. visit B.visiting C. visited D. to visit 68. When we were in Stockholm, we had coffee and cakes a coffee shop the old town. A. on – on B. at – at C. in – in D. on – at 69. People in Tokyo are very polite friendly. A. or B. but C. so D. and 70. Have you ever to Manchester? A. be B. been C. being D. went