chung minh n^2 +1 khong chia het cho 7

V. Writing a passage using the words given: 1. My future house/ the ocean . → ............................................................................................................................. 2. It/ surrounded / blue sea/ tall trees → ............................................................................................................................. 3. There / washing machine/ dishwasher/ wireless TV/ robots → ............................................................................................................................. 4. Robots /go to the market/ take care of children . → ............................................................................................................................. 5. I / have / super smart TV / my house. → ............................................................................................................................. 6. It / aslo / help me / order food / the supermarket. → ............................................................................................................................. VII. Rewrite the following sentences using the given words below. 1. No cities in Vietnam are more crowded than Ho Chi Minh city. => Ho Chi Minh city is ________________________________________ . 2. I have never visited this beautiful place before. => This is the first time ________________________________________ . 3. It is the first time our team has won a big match. => We have never ____________________________________________ . 4. I last saw him 2 weeks ago. => I haven’t _________________________________________________ . 5. I started learning English in 2000. => I have ___________________________________________________ . 6. We pollute the air. We have breathing problems. (Use conditional sentence) → ............................................................................................................................. 7. I/ ever/ go / Mexico (Use present perfect tense) → .............................................................................................................................

chung minh n^2 +1 chia het cho 7

help me plsssssssssssssssssss câu b câu c thôi

Read the following passage and choose the correct answer (A, B, C or D) to fill in each of the blank spaces below Nowadays people are more aware that wildlife all over the world is in (16) ________. Many species of animals are threatened, and could easily become (17) ________ if we do not make an effort to protect them. There are many reasons for this. In some cases animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are (18) _______ alive and sold as pets. For many animals and birds, the problem is that their habitatsthe place where they live-is disappearing. More land is used for farm, for houses and industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and (19) ________ wildlife. The most successful animals on Earth, human beings, will soon be the only ones (20) ________ unless we can solve this problem. Câu 16. A. threat B. problem C. danger D. vanishing Câu 17. A. disappeared B. vanished C. extinct D.empty Câu 18. A. catched B. caught C. catching D. catch Câu 19. A. spoil B. wound C. wrong D.harm Câu 20. A. left B. over C. staying D. survived Read the passage and choose the correct answer (A, B, C, or D) for questions 21-25. Almost a hundred thousand people were killed and half a million homes destroyed as a result of an earthquake in Tokyo in 1923. The earthquake began a minute before the noon when the inhabitants of Tokyo were cooking their midday meals. Thousands of stoves were overturned as soon as the earth began to shake. As a result, small fires broke out everywhere and quickly spread. The fire engines were prevented from going to help because many of the roads had cracked open. It was impossible to use fire fighting equipment as most of the water pipes had burst. Consequently, over ninety percent of the damage caused by fire rather than by the collapse of the buildings. Câu 21. How many people were killed in the earthquake in Tokyo in 1923? A. Ten thousand people B. Almost a hundred thousand people C. Thousands of people D. Many people Câu 22. When did the earthquake begin? A. began a minute before the noon in 1923 B. began a minute before the noon in 1924 C. began a minute before the noon in 1925 D. began a minute before the noon in 1922 Câu 23. What happened as soon as the earth began to shake? A. people died B. the water pipes had burst C. Thousands of stoves were overturned D. the roads had cracked open Câu 24. Why was the fire engines prevented from going to help? A. because the water pipes had burst B. because no one helped C. because small fires broke out everywhere D. because many of the roads had cracked open Câu 25. What was most of the damage caused by? A. fire B. the roads C. water pipes D. the collapse of the buildings Read the following passage and choose the correct answer (A, B, C or D) to fill in each of the blank spaces below Today, supermarkets are found in almost every large city in the world. But the first supermarket (26)_________opened only fifty years ago. It was opened in New York by a man named Michael Cullen. A supermarket is different (27)___________other types of stores in several ways. In supermarkets, goods are placed on open shelves. The (28)__________ choose what they want and take them to the checkout counter. This means that fewer shop assistants are needed than in other stores. The way products are displayed is another difference between supermarkets and many other types of stores; (29)__________ example, in supermarkets, there is usually a display of small inexpensive items just in front of the checkout counter: candies, chocolates, magazines, cheap foods and so on. Most customers (30)__________go to a supermarket buy goods from a shopping list. They know exactly what they need to buy. They do the shopping according to a plan. Câu 26. A. is B. has been C. was D. were Câu 27. A.in B. from C. of D. with Câu 28. A. customers B. managers C. assistants D. sellers Câu 29. A.in B. of C. for D. about Câu 30. A. who B. what C.which D.whom

Cho 12,64g hỗn hợp gồm Na và Na2O td vs lượng nước dư thu đc 6,272 lít khí H2 (đktc). Tính khối lượng NaOH nguyên chất tạo thành

cho tam giác MNP cân tại M có đường cao MI .Trên tia đối của tia NI lấy điểm A sao cho NA = NI. lấy điểm B sao cho P là trung điểm của MB a. chứng minh rằng : I là trung điểm của NP và I cách đều hai cạnh MN,MP. b.Chứng minh rằng BI=MA c.Gọi C là trung điểm của AB.Chứng minh rằng ba điểm M,I,C thẳng hàng

Vẽ Râu Trắng hoặc shanks tóc đỏ trong one piece

Choose best answer A, B, C or D to complete the following sentences. Mark your answer on your answer sheet Câu 1. Air________ is one of the main problems we all have to solve. A. polluting B. polluted C. pollute D. pollution Câu 2. He ran so ________ that no one could catch up with him. A. quick B. quickly C. quicklier D. quickness Câu 3. Try again! Don’t give _____ hope. A. away B. of C. up D. off Câu 4. He __________ the phone when we arrived. A. was answering B. is answering C. has answered D. answered Câu 5. This is the __________ book that I’ve ever read.. A. interesting B. more interesting C. most interesting D. less interesting Câu 6. Would you mind ___________ this letter for me? A. post B. to post C. posted D. posting Câu 7. “He had to work 12 hours everyday.” - “____________” A. Sure. B. I can’t imagine that. C. How cool! D. I wish I could go back to that time. Câu 8. Everything is OK, ___________? A. is it B. isn’t it C. are they D. doesn’t it Write the letter A, B, C, or D to indicate the word whose underlined part is pronounced differently front that of the rest in each of the following questions. Câu 9. A. days B. says C. stays D. ways Câu 10. A. laughed B. hoped C. mixed D. decided Write the letter A, B, C or D on your answer sheet to indicate the option that needs correcting Câu 11. The man and his dog which are our next-door neighbors are very friendly A. his B. which C. neighbors D. friendly Câu 12. If the lady is not too old, she would get a better job in this city. A. is B. get C. better D. in Write the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the given ones Câu 13. No one can help him with the housework today. A. He can be helped with the housework today. B. He can’t help with the housework today. C. He can’t be helped with the housework today. D. He can’t be help with the housework today. Câu 14. My mother is so old that she can’t work hard. A. My mother is not old enough to work hard. B. My mother is too old to work hard. C. My mother is such old to work hard. D. My mother is not old to work hard. Câu 15. “How long have you learnt English, Nam?” Nga asked. A. Nga asked me how long Nam has learnt English. B. Nga asked Nam how long he has learnt English. C. Nga asked Nam how long he had learnt English. D. Nga asked me how long Nam had learnt English. Read the following passage and choose the correct answer (A, B, C or D) to fill in each of the blank spaces below Nowadays people are more aware that wildlife all over the world is in (16) ________. Many species of animals are threatened, and could easily become (17) ________ if we do not make an effort to protect them. There are many reasons for this. In some cases animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are (18) _______ alive and sold as pets. For many animals and birds, the problem is that their habitatsthe place where they live-is disappearing. More land is used for farm, for houses and industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and (19) ________ wildlife. The most successful animals on Earth, human beings, will soon be the only ones (20) ________ unless we can solve this problem. Câu 16. A. threat B. problem C. danger D. vanishing Câu 17. A. disappeared B. vanished C. extinct D.empty Câu 18. A. catched B. caught C. catching D. catch Câu 19. A. spoil B. wound C. wrong D.harm Câu 20. A. left B. over C. staying D. survived

Giúp em phần chứng minh với em ko biết là