Từ một điểm A ở bên ngoài đường tròn (O), kẻ tiếp tuyến AB (B là tiếp điểm) và cát tuyến ACD đi qua tâm O của đường tròn (C và D thuộc (O), C nằm giữa A và D). Tính BAD + 2ABC . A. 90 B. 150 C. 120 D. 60

have you met any of your neibours since you live here

Giải giúp mik câu này thui ạ mn ơi

Kiểu dữ liệu của x trong xâu lệnh x:a+b/2; là gì? Integer Longint Real Word Câu 2 : Cho hàm sau Function F(x: integer ):Integer Begin F:x*x End; Giá trị của F(3) là j 3 6 9 0

Part 2: Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. (1.0 pt) ​You probably hear a lot about the environment. But do you really worry about it? Do you help to save the Earth? Cleaning a planet is not a task for only one person. People everywhere have to get involved and understand this is our world. If we pass the world about the importance of reducing, reusing and recycling, the destiny of this planet can change. ​Reducing the amount of waste you produce is the best way to help the environment. Did you switch off the water while brushing your teeth in the morning? You should do it! Did you walk to school or did you use public transportation? ​Reusing is another way of being environmentally friendly. Try to find ways to use things again! Take cloth sacks when you go shopping instead of taking home newspaper or plastic bags. You should use cloth sacks again and again. You have to save some trees! Shoe boxes and margarine containers can be used to store things or become fun art projects. Use your imagination! ​You can also recycle in your home or even at school. Many communities have recycling centers for newspapers, batteries and a variety of glass and plastics. These can be made into new products. Question 29: What is the most environmentally friendly way to save the Earth? A. The involvement of people everywhere in this planet. B. Recycling things in your home or at school. C. Reusing things instead of buying or using new ones. D. Reducing the amount of waste produced. Question 30: Which of the following statements is NOT true? A. The environment is probably talked a lot about. B. Batteries, glass and plastics cannot be recycled. C. Only one person cannot save the planet. D. You should use cloth sacks to go shopping. Question 31: According to the passage, how many ways are there to help save the Earth? ​A.4 B.5 C3 D6 Question 32: According to the third paragraph, which of the following can be used to make fun arts? ​A. shoe boxes​​B. cloth sacks​​C. batteries​​D. plastic bags Giúp mik với 🙁

Bổ xung thêm câu hỏi số 13. C bits, D goodness

1. It is ten years since my brother last drank beer My brother………………………………………………………… 2. The last time I drank beer was two weeks ago I haven’t……………………………………………..………….. 3. I started to collect stamps four years ago I have…………………………………………………………… 4. He began to teach E five months ago He has…………………………………………………………… 5. They began working as a nurse two weeks ago They have……………………………………………………….. 6. She started learning French when she was ten She has…………………………………………………………… 7. I have taught in this school for 12 years I started …………………………………………………….……. 8. He has slept for two hours He began…………………………………………………..…….. 9. I last saw her brother two years ago I haven’t………………………………………………….……… 10. They last ate the food six months ago They haven’t……………………………………………..………. 11. He last visited his uncle when he were in Hanoi He hasn’t…………………………………………………..……..

ai giúp em với ạ giúp được em cho 5sao với cảm ơn 1 ạ

"Lời nói có sức mạnh diệu kì trong cuộc sống của con người ".Hãy viết một bài văn Nl ngắn (khoảng 200 từ)bàn về vấn đề trên

cho tam giác ABC vuông cân tại A. O là giao điểm của tia phân giác góc B với AC. Chứng minh AB, AC là tiếp tuyến của đường tròn