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Cho tam giác ABC có BC = a , các điểm D,E lần lượt là trung điểm của 2 cạnh AB và AC . Gọi M,N lần lượt là trung đểm của các đoạn BD , CE a) Tính DE theo a b) Tính độ dài đoạn thẳng MN theo a

mn giúp e bài 2 nha cảm ơn một bên bài đọc một bên là câu hỏi nha

Digi bức dưới Y/C: Thay đổi các thứ về hóa trong pic thành các thứ về tiếng Anh trong mình con vịt thì vẫn thế :>> Để tranh dạng hình vuông để đặt avt ạ , ký bé tí , full màu,line . Ko hiểu đề hỏi ngay lập tức :)

Nhu cầu về acid amin của vi sinh vật có gì đặc biệt

Mọi người ơi giúp mình với nhaaaa

1. I usually _______ my younger sisters when my parents are away on business. A. pick up B. take care of C. look for D. take charge of 2. Ms. Mai asked me how she could _______ household chores equally in her family. A. make B. divide C. give D. contribute 3. In my family, my father always takes charge of doing the _______ lifting. A. strong B. hard 4. My mother told me to do the _______ yesterday but I forgot about it since I had much homework to finish. A. wash-up B. laundry C. childcare D. exercises 5. ______ the rubbish in the early morning is a part of my daily routine. A. Taking out B. Coming out C. Pulling out D. Bringing out 6. My wife is going on her business next week so I have to _______ most of the chores around the house. A. distribute B. hold C. take D. handle 7. Mr. Hoang found it difficult to be in charge of the household _______ . A. financial B. financially C. finances D. financier 8. _______ is a person who works at home and takes care of the house and family. A. Servant B. Homemaker C. Breadwinner D. Houseman 9. When his wife gave birth to a baby boy, Mr. Nam became the sole _______ . A. housemaid B. housekeeper C. father D. breadwinner 10. My mother and I often go to the supermarket to shop for _______ at weekends. A. cook B. groceries C. heavy lifting D. the chores

I. Use a Relative pronoun to combine each pair of sentences below. 1. The student is from China. He sits next to me. 2. I thanked the woman. This woman had helped me. 3. The professor is excellent. I am taking his course. 4. Mr. Smith said he was too busy to speak to me. I had come to see him. 5. The man is my father. I respect his opinions most. 6. I saw a lot of people and horses. They went to market. 7. Tom has three sisters. All of them are married. 8. I recently went back to Paris. It is still as beautiful as a pearl. 9. I recently went back to Paris. I was born in Paris nearly 50 years ago. 10. She is the most intelligent woman. I've ever met this woman. 11. Do you know the music? It is being played on the radio. 12. You didn't tell us the reason. We have to cut down our daily expenses for that reason. 13. The day was rainy. She left on that day. 14. I've sent him two letters. He has received neither of them. 15. That man is an artist. I don't remember the man's name. 16. One of the elephants had only one tusk. We saw these elephants at the zoo. 17. That car belongs to Dr. Clark. Its engine is very good. 18. You sent me a present. Thank you very much for it. 19. This is Mrs. Jones. Her son won the championship last year. 20. I'll introduce you the man. His support is necessary for your project.

II. Choose the best answer: (3ms) 1. I'd like................. bananas, please! a. any b. some c. many d. much 2. Lemonade, apple juice and................. are cold drinks. a. vegetables b. noodles c. iced tea d. beans 3. She isn't heavy. She is.................. a. thin b. fat c. strong d. light 4. Lan................. aerobic everyday. a. does b. plays c. goes d. dances 5.................. sports do you play? a. What's b. Who c. Which d. How 6. We need a tent to go................. a. fishing b. swimming c. camping d. jogging 7. They are going to stay................. their uncle and aunt this summer vacation. a. in b. at c. by d. with 8. What is your nationality? I am................. a. Vietnamese b. Vietnam c. England 9. There are only two................. in my country. a. weather b. seasons c. citadel d. cities 10.................. do you go to school? Every afternoon. a. How much b. How often c. How many d. How 11. What do you often do................. it is hot? a. What b. Which c. How d. When 12. What about.................. tennis this afternoon? a. play b. playing c. to play d. plays

Giúp mình câu này với ạ , cần gấp lắm