Một giáo viên thể dục đo chiều cao (tính theo em ) của nhóm học sinh nam và ghi lại ở bảng sau

M.n giải dùm e vs e đg cần gấp ạ

Góc có số đo 58 độ là một góc nhọn góc tù góc vuông góc bet

Tìm giới hạn của hàm số Lim(n+2)(2n+1)/n2+1

6 More than 50 films______ in HCM city since June A were shown B had been shown C have been shown D have shown 7 The Instructions to prevent the disease from spreading ________ precisely A must follow B must followed C must to be followend D must be followend 8 When I was a high school student, I_______ a scholarship A used to awarsd B use to be awarded C use to award D used to be awarsded 9 Mary______ that the plan will be changed A has told B has Just been told C has been just told D had been just told 10 Many speeies of rare animals______ with extnction A Is endangeract B Are in danger C threaten D are threatened 11 The donations _______ to the pandemie areas to help the people there to overcome difficuties A are going to send B are going to be sent C will send D are sending 12 The boy donated his saving money to help the poor A the boy's saving money donates to help the poor B the boy's saving money was donated to help the poor C the boy's saving money is donated to the help the poor D The boy's saving money donated to the help the poor 13 The girl cleans the room every day A the room every day is cleaned B the room is vevery day cleaned C the room is cleaned by the girl every day D the room is cleaned every day be the girl 14 nobody violates the regulations of preventing the disease A The regulations of preventing the disease is not violated B The regulations of preventing the disease are not violated C The regulations of preventing the disease are not violated by somebody D the regulations of preventing the disease are not violated by nobody 18 A new hospital / been / build/ covid 19 patients / Iocal volunteers A a new hospital by iocal volunteers have been build for covid 19 patients B a new hospital have been bulit for covid 19 patients by ioca volunteers C a new hospital has bulit for covid 19 patients by ioca volunteers D a new hospital has been bulit for covid 19 patients by ioca volunteers 19 Their/ complaints/ schould/ send/ the head office A their complaints should send to the head office B their complaints should send to the head office by people C their complaints should be send to the head office D their complaints to the head office schould be sent

10/ Choose the best answers. 1. My friend, Hoa , ....................works in a city bank , earns much money than I do . a. who b. that c. which d.Whose According to the weather ............................., It is going to rain here tomorrow a. forecasting b. forecast c. forecasted d. on forecast 2. Turn .....................the volume . I can’t hear clearly . a. down b. on c. off d.up 3. The house ....................I want to buy is very beautiful. a. who b. which c. in which d. b and c are correct 4. ....................having a lot of money , she didn’t buy e new bike. a. In spite of b. Although c. Though d. Because 6. I suggest.......................some monsy for poor children. a. to raise b. raising c. raised d. raise 7. Many people became .......................after the earthquake. a. home b. homesick c. homeless d. harmless 8.The house was ................................quiet . a. strange b. strangely c. beautiful d. stranger 9.The dog ........... bit me yesterday is mine. A .which B.who C.whom D.what 10.The clown made me .............................. alot. A.to laugh B.laughing C.laugh 11.The book ............... you gave me yesterday is interesting. A.it B. that C.which D.who 12.When we lived in Hanoi ,my father used ................... us to the cinema. A.take B.took C.took D.taken 13.This is the girl ................... helped me yesterday. A.who B.whom C.which D.How 14.The man .............. I told you yesterday is so handsome. A.what B.how C.which D.whom 15.Mrs Green .................. helps us to find the books. A.is a librarian B.is librarian C.is the librarian D.the librarian 16.I ....................... go to Hanoi now if I had free time. A.would B.will C.shall 17.My father often advises us ( to tell / telling / tell ) him the truth . 18.We enjoyed the film very much beacause it was so ( interested /interesting /interest )

Viết hộ mình bài văn mình cám ơn

Cho 13,6 gam hỗn hợp Mg và Fe tác dụng vừa đủ với 8,96 lít khí Cl2 (đktc). Thành phần phần trăm về khối lượng của Mg là bao nhiêu?

Bài 3. A là 1 hợp chất thường được sử dụng làm phân bón hóa học. Phân tử A chứa 4 nguyên tố hóa học, trong đó, % khối lượng nguyên tố oxi là 54,7%, % khối lương nguyên tố Ca là 17,09%, nguyên tố R chiếm 26,5% và còn lại là hiđro. Biết rằng khối lượng mol của A < 240 gam. Hãy xác định CTHH của A.

Một người ngồi trên xe buýt thấy cây cối bên đường chuyển động, anh ta nói rằng chiếc xe buýt đang đứng yên. Điều đó chứng tỏ anh ta chọn vật mốc là A: cây cối bên đường B: ngôi nhà bên đường C: người lái xe buýt D: chiếc xe buýt thứ hai đang đi lại gần