Cho tam giác abc có ba góc nhọn nội tiếp đường tròn(T) có tâm O các đường cao AN, BC, CQ cắt nhau tại H ( N€BC, P€AC, Q€AB). a; CM BCPQ nội tiếp được trong 2 đường tròn b, Tia OA × đtròn (T) tại D (D khác A). Gọi M là trung điểm của BC. CM : AH= 2OM Câu 2 tớ không tài nào giải được, giúp tớ với, cảm ơn các bạ nhiều nhiều

câu đặc biệt về cách phòng tránh covid 19

Liên hệ được đến vai trò của khoa học và kĩ thuật đến sự phát triển của Việt Nam hiện nay

Phần đất liền Đông Nam Á có tên là:

Cho em xin đáp án và giải thích chọn đáp án đó luôn dùm em ạ

cách ẩn Yahoo ;-;;;;;;;;;;;;;;;;;;;;;;;

Mark letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following conversations. 17.Tom: "Congratulations! You've passed the exam." ~ John: "_______ " A. No, I don't think so B. Many thanks C. Sorry, I don't D. Not at all 18. Mike and Jenny are at their first meeting. - Mike: "Let me introduce myself. I'm Mike." - Jenny: "______. " A. You are welcome. B. It's my pleasure. C. I'm very pleased. D. Pleased to meet you. Mark letter A, B, C or D on your answer sheet to indicate the word CLOSET in meaning to the underlined word in the following question. 19.He’s bought me a smart new camera to change from my old one. A. recharge B. reuse C. replace D. redo 20. The city is facing serious pollution problems. A. hard B. minor C. false D. light Mark letter A, B, C or D on your answer sheet to indicate the word OPPOSITE in meaning to the underlined word in the following question. 21. Red minibuses often provide more convenient transport for riders. A. suitable B. available C. good D.unpleasant 22. The Glastonbury Festival is the most well-known festival in the UK. A. famous B. unpopular C. common D. favorite Read the following passage and mark letter A, B, C or D on your answer sheet to indicate the correct word that best fits each of the numbered blanks. Rivers are one of the world's most important natural resources. Many cities are on large rivers, and (23)_______every country has at least one river that plays an important part in the lives of its people. Besides transportation, rivers (24) _______ food, water for crops, water to drink, and opportunities for recreation for people who live along their banks. And in order to get water for crops, engineers sometimes build a dam (25)_______a river and let the water become a lake behind the dam. Then people can use their water not only to irrigate fields but also to make electricity for homes and industries. However, the water often becomes (26) _______ when cities on river banks grow in size and the number of industries increases. We are learning that it is necessary to keep rivers clean if we want to enjoy the (27)________of the natural resources. 23. A. many B. a lot C. plenty of D. almost 24. A. provide B. support C. assist D. create 25. A. over B. across C. among D. under 26. A. crowded B. overloaded C. polluted D. excited 27. A. interests B. benefits C. tips D. receipts Read the following passage and mark letter A, B, C or D on your answer sheet to indicate the correct word that best fits each of the numbered blanks. The natural environment includes allnatural resources that are necessary for life: the air, the oceans, the sun and the land. Because they are vital for life, these resources must be protected from pollution and conserved. Ecologists study their importance and how to use them carefully. According to ecologists, resources are divided into two groups: renewable and non-renewable. When a resource is used, it takes some time to replace it. If the resource can be replaced quickly and easily, it is called renewable. If it cannot be replaced quickly and easily, it is called non-renewable. For example, grass for animals is a renewable resource. When cows eat the grass, the resource is used. If the soil is fertilized and protected, more grass will grow. Coal, however, is non-renewable because it takes millions of years to make coal. All fossil fuels are nonrenewable resources. 28. The natural environment consits of ______ A. the air and the land B. the oceans and the sun C. the sun and the land D. all natural resources 29. According to ecologists, there are ______resource groups. A. two B. three C. four D. five 30. If the resource can be ______, it is called renewable. A. burnt quickly B. replaced quickly C. divided properly D. used quickly 31. Glass for animals is a ______ resource. A. limited B. non-renewable C renewable D. clean 32. According to the passage, coal is non-renewable because it takes ______to make coal. A. hundreds of years B. thousands of years C. millions of years. D. billions of years Mark letter A, B, C or D on your answer sheet to indicate the best sentence that can be made from the cues given. 33. It/ expensive / build / solar power stations. A. It is very expensive to build solar power stations. B. It is very expensive to build a solar power stations. C. It is very expensive building solar power stations. D. It is very expensive building a solar power stations.

Sử dụng các từ và cụm từ gợi ý cho sẵn 5. Although/ students/ eat/ breakfast/ diner/ home,/ usually/ have / lunch/ school. ⇒ 6. I/ know/ him/ since/ we/ be/ primary students. Sắp xếp 7. I / should/ suggest/ use/ they/ bulbs./ energy/ saving

ĐỀ 2 A.Circle the best answer: (2ps). 1.I open my book in order to……………. a) read b) reading c) readed. 2.You should cool the burn……………………….. a)immediately b)immediate c)immediating. 3.What time ………………. Lan be here.? a)is b)shall c)will. 4. Would you mind…………. for a few minutes? a) to wait b) waiting c) wait 5. This is the first time I……… his mother. a) meet b) met c) have met. 6. Thank you very much for the comics you ………………..me last week. a)send b)sending c)sent . 7). I’d like you………. my family this weekend. a) meet b) to meet c) meeting. 8). Do you mind if I………. here? a) sitting b) to sit c) sit B. Match the questions in column A with the answers in column B ( 1ps). Column A Column B 1. What is the mixture made from? a. It means not throwing things away and trying to find another use for them. 2. What do you mean by ‘ recycle” ? b. From flour, milk and salt. 3. What does “ reduce” mean ? c. It means not buying products which are overpacked. 4. Is it good to save natural resources? d. Yes, it is. III. Read the stage carefully, then answer the questions. (2,5ps) Yesterday, when I was riding along a busy street, I saw an accident. A woman was knocked down when she crossed the street at a zebra crossing. Many people stopped to offer their help. A policeman arrived and asked a young man to telephone for an ambulance. When waiting for the ambulance, the policeman and some people tried to stop the bleeding. They used a handkerchief to cover the wound, then put pressure on it and held it tight. They tried to talk to her in order to keep her awake. After about ten minutes, the ambulance arrived and the woman was taken to the hospital. - was knock down (v) : bị đâm ngã * Answer the questions 1. Who was knocked down on the street? ......................................................................................................................................... 2. Who telephoned for an ambulance ? ......................................................................................................................................... 3. What did the the policeman and some people try to do? ......................................................................................................................................... 4. What did people use to cover the wound? ......................................................................................................................................... 5. Was the woman taken to the hospital then? ......................................................................................................................................... IV. Rewite the sentences without changing their meaning ( 2,5ps) 1. Will you open the door, please. Would you mind ........................................................................................? 2. Can I sit here? Do you mind ............................................................................................... ? 3. People recycle car tires. Car tires ...................................................................................................... . 4. We reuse all tea leaves. All tea leaves...................................................................................... . 5. Learning English is interesting. It’s interesting .............................................................................................

Các biện pháp cần thiết để duy trì đa dạng sinh học