Từ điểm D trên cạnh AB của tam giác ABC , kẻ một đường thẳng song song với BC , cắt AC ở E và cắt đường thẳng qua C song song với AB tại F. BF cắt AC tại I . Tìm các cặp tam giác đồng dạng? , giải thich vì sao tam giác ấy lại đồng dạng! Làm ơn giúp mình câu hỏi trực tuyến này với mai phải nộp mất rồi pls!

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BÀI TẬP ANH 7 I. Chọnmộtđápánđúngnhất( A, B, C hoặc D) đểhoànthànhmỗicâusau: 1. What do students often do____________ recess? A. in B. on C. at D. Of 2. My brother never goes to school late and____________. A. so does Lan . B Lan doesn’t, either C. Landon’t, either. D. neither doesn’t Lan 3. It’s very important____________ your hand before meals. A. Wash B. to wash C. washing D. washed 4. We should keep our teeth____________. A. be clean B. to be clean C. clean D. cleanly 5. She works____________ a hospital. She takes care____________ sick people A. in/ at B. at / for C. of / at D. in / of 6. Remember____________ home by ten o’clock. A. to get back B. getting back C. to getting at D. for getting 7. You are too fat. You should eat more____________. A. Vegetables B. Milk C. Fish D. Meat 8. He broke the vase because he was____________. A. Careful B. Carefully C. carelessly D. careless 9. Would you like milk in your coffee? – Yes____________, please A. a few B. a little C. little D. Few 10. I don’t like this book because it is very____________. A. Bored B. interesting C. boring D. interested II. Điềndạngđúngcủatừ in hoavàochỗtrốngđểhoànthànhmỗicâusau: 1. Nobody likes him because his hair is always____________ and dirty. TIDY 2. In Vietnam, one of the most popular____________ at recess is talking. ACT 3. She is a very____________ singer. People don’t like her at all. POPULAR 4. This knife is____________ - It can’t cut anything. USE 5. Our students are going to have a____________ check-up next Monday. MEDICINE 6. In the countryside, people often know all the people in their____________. NEIGHBOR 7. You must be careful when playing video games because they can be____________. ADDICT 8. I’d like a nice____________ orange JUICE 9. Edison’s most famous____________ was the electronic bulb. INVENT 10. This dictionary is very____________ for you to learn English USE III. Cho dạngđúngcủađộngtừtrongngoặcđểhoànthànhmỗicâusau: 1. He prefers listening to music to (watch)____________ television. 2. He (live)____________ in London for two years and then moved to Liverpool in 2010. 3. She gets fat because she always tastes things while she (cook)____________. 4. Bill decided (buy)____________ rather than a used one. 5. George is interested in (take)____________ an art class. 6. Listen to those people! What language____________ they (speak)____________ ? 7. When I was small, I used to (go)____________ on bare foot . 8. Oh! This bag is very heavy . I can’t carry it. – Don’t worry, I (help)____________ you with it. 9. What would you like (eat)____________, Ba? – I like eating fish. 10. They (have)____________ a party tomorrow. mong các bạn giúp cho cảm ơn các bạn rất nhiều