Cho tam giác ABC nội tiếp đường tròn ( O ). Vẽ đường cao AD, BE cắt nhau tại H và cắt đường tròn lần lượt tại P và Q a)chứng minh tứ giác HDEC, ABDE nội tiếp B)Chứng minh CP = CQ C)tam giác HPB cân

He will still be ... school when he is 14.

Lấy 4 ví dụ về phương pháp chế biến và dự trữ thức ăn

4) so sánh hai phân số sau a) 7/15 và 4/9 B1 tính nhanh nếu có thể a) (-18).5+5.10+5.(-2) b) (-15):(-5)+7.(-3/7) c) (-157)+(-16)+257+(-43)+(-84) d) (+23)+(-135)-(-77)-/-65/+(-30) e) -5/7 + (-6/11+1) f) 1/2-2/3+4/5-5/6 g)1/3.4/5+1/3.6/5+2/3 h) -5/7.2/11+-5/7.9/11+1 5/7 không phải 15 phần 7 I)19/5.2007/2017+19/5.10/2017 K) 4/25.5/9+-4/25.10/3+7/9 m) 7/19.8/11+7/19.3/11+12/19 n)17/13.18/23-4/13.18/23-(-5)/23 P) 5/7 .5/11+5/7.2/11-5/7.14/11 q)-2/17+15/19+-15/17+13/20+4/19 X)7/-25+-18/25+4/23+5/8+19/23 S)5/7.-4/19+-15/7.5/19

Bạn nào làm được điểm cao nhất mình cảm ơn cần gấp làm nhanh 60 điểm

Vai trò thức ăn đối với sự tồn tại sinh trưởng phát triển của vật nuôi?

Gặp những dạng như này, mình không biết cách tính. Các bạn được thầy cô dạy rồi chỉ mình với ạ. Cách giải bằng tay với casio ạ. Cảm ơn

Cho tam giác ABC vuông cân tại A Trên nửa mặt phẳng bờ là đường thẳng BC,vẽ các tia Bx,Cy cùng vuông góc với BC.Trên đoạn thẳng BC lấy điểm M bất kỳ (M khác B,C).Đường thẳng qua vuông góc AM cắt Bx Cy lần lượt tại H và K a, CMR AH=AK b,Kẻ MH cắt AB tại P ,MK cắt AC tại Q.Chứng minh PQ//BC

Thế nào là chủ danh từ, động từ, tính từ trong TA là gì ? Cho ví dụ cụ thể và dễ hiểu

I. Choose the letter A, B, C, D to indicate the correct answer to each of the following questions. Question 1. Do you know the man ___________ we met at the party last week? A. which B. whose C. who D. whom Question 2. My mother, ___________ everyone admires, is a famous teacher. A. where B. whom C. which D. whose Question 3. This is the village in ___________ my family and I have lived for over 20 years. A. which B. that C. whom D. where Question 4. We need a teacher ___________ native language is English. A. who B. whose C. whom D. that Question 5. The woman, ___ was sitting in the meeting hall, didn’t seem friendly to us at all. A. who B. whom C. where D. when Question 6. We’ll come in June ___________ the schools are on holiday. A. that B. where C. which D. when Question 7. The old building ___________ is in front of my house fell down. A. of which B. whom C. whose D. which Question 8. I bought a T- shirt ___________ is very nice. A. who B. whose C. whom D. that Question 9. We saw many soldiers and tanks ___________ were moving to the front. A. which B. who C. that D. whom Question 10. The man sitting next to me kept talking during the meeting, ___________ really annoyed me. A. which B. who C. that D. whom II. Choose the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.( tìm chỗ sai) Question 11. (A) The waiter (B) whom served us yesterday (C) was polite and (D) friendly. Question 12. This class (A) is only (B) for people (C) who’s first language (D) is not English Question 13. This is (A) the boy (B) who sister (C) studied (D) with me at high school. Question 14. He (A) is moving to Lang Son city, (B) that is (C) in the north-east (D) of Viet Nam. Question 15. The girl (A) whom is standing (B) over there (C) is (D) from Viet Nam. III. Fill in the blank with a suitable relative pronoun/ adverb.( điền ĐTQH-trạng từ QH) Question 16. Let me see the letter _________ you have written. Question 17. Is there anyone _________ can help me do this? Question 18. Mr. Brown, _________ is only 34, is the director of this company. Question 19. I know a place _________ roses grow in abundance. Question 20. It was the nurse _________ told me to come in. Question 21. The teacher with _________ we studied last year no longer teaches in our school. Question 22. They showed me the hospital _________ buildings had been destroyed by US bombings. Question 23. We saw many soldiers and tanks _________ were moving to the front. IV. Rewrite each pair of sentences as one sentence using relative pronouns in the brackets. ( viết lại câu) Question 24. We want to visit a temple. It opens at 7.00. (that)  The temple . Question 25. A boy’s bike was stolen. He went to the police station. (whose)  The boy . Question 26. A friend met me at the airport. He carried my suitcase. (who)  The friend . Question 27. Nam cooked a meal. It was delicious. (which)  The meal . Question 28. The friend is staying with me. She comes from Vietnam. (who)  The friend . Question 29. I found man’s wallet. He gave me a reward. (whose)  The man . Question 30. I often go to the shop in the centre. It is cheaper. (which)  The shop in the centre .