Cho tam giác ABC cân tại A,đường cao AH.Đường thẳng H song song với AB cắt AC tại K.Bk cắt AH tại G.Gọi I là trung điểm của AB.Chứng minh rằng: a,G là trọng tâm của tam giác ABC b,C,G,I thẳng hagf c,,KI là đường trung trực của đoạn thẳng AH lm nhanh giúp mk voi a

chọn từ có cách phát âm khác: A. surpriSing B. increaSing C. pleaSing D. houSing

diễn biến , kết quả chiến tranh Chi lăng - Xương Giang

Chiếu tia X vào tấm kim loại làm tấm này nóng lên .đây là hiện tượng gì ?

Giúp mình với mình cảm ơn chỉ làm trắc nghiệm thôi nhé

Cho bảng số liệu về tổng sản phẩm trong nước của Việt Nam ( bảng 22.1 sgk/73 ) . Hãy vẽ biểu đồ hình tròn thể hiện tổng sản phẩm trong nước của Việt Nam trong năm 1990 đến 2000 . Qua biểu đồ hãy rút ra nhận xét

Bài tập về hàm số ....................................

Word Forms 1. There is a ___________ demand for this service (grow) 2. Tents come in _______ shapes and sizes (variety) 3. That will be a ___________ experience (memory) 4. Tuan is an active student. He takes part in a lot of _________ (act) 5. The supermarket is always ______________ with consumers (crowd) 6. Our neighbors are very ____________ they're always playing loud music late at night (consider) 7. Mary is one of his _______________ (acquaint) 8. New Year's Day is a _____________ festival (nation) 9. There are a lot of _______________ in my country throughout the year (celebrate) 10. He won the _______________ as my class leader (nomination) 11. Easter is a _______________ festival which is celebrated in many countries (joy) 12. The renovation process and _______________ took four months (decorate) 13. He treated us with ________________ and thoughtfulness (generous) 14. Only in his dreams does he give ______________ to his fears (express) 15. Beethoven and Chopin were leading Romantic _______________ (compose) 16. I felt such a sense of ____________, up in the hills alone (free) 17. Your proposal is being _____________ considered (act) 18. The patient is getting on _____________ (satisfy) 19. After graduation, my ___________ is to earn money to support my family (purpose) 20. He has not been ________________ as presidential candidate (nominate) 21. She is a hearty _______________ in the town (active) 22. The ____________ are cleaning the beach (conserve) 23. The model works very ____________, which attracts a lot of people (efficient) 24. Saucepans are sold in that __________, goods department (house) 25. _____________, our traditional activities should be enhanced (Final) 26. You can't pass the examination without ___________ (prepare) 27. Speech ____________ human being from the animals (distinguish) 28. Her ____________ was a shock to him (die) 29. I've lost all __________ in my legs (feel) 30. She looked _________ at my result of her work (proud) 31. It was ______________ of you to play the piano while I was sleep. It's bothering me (consider) 32. His _____________ is always for his son (prior) 33. The result of the experiments was _______________ (satisfy) 34. My grandfather is a _____________ person (heart) 35. This shop ________________ in chocolates (special) 36. Ms Chi talks with ____________ about her son's result at school (proud) 37. The result of the experiments was _________________. I'm very pleased with it (satisfy) 38. Passover, which is the festival of _________________, is celebrated by Jewish people (joyful)

Chiếu tia tử ngoại vào chất khí thì chất đó phát ra ánh sáng màu lục .đây là hiện tượng gì ?

Bài tập về hàm số ....................................