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Hình thang ABCD có đáy AB,CD.Gọi E,F,K theo thứ tự là trung điểm của AD,BC,BD.Chứng minh ba điểm E,F,K thẳng hàng
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Các câu hỏi liên quan

1. In my experience, …………… are very friendly. A. English B. an English C. the English. D. this English 2. My bike ……………! Call the police! A. was stealing B. has been stolen C. stole D. was being stolen 3. I’m having dinner at Jim’s tonight, …………… I? A. am not B. don’t C. aren’t D. isn’t 4. I wonder if you know where …………… A. is the post office? B. is the post office. C. the post office is? D. the post office is. 5. I’ll get my dad a book for his birthday …………… I find something better. A. if B. until C. although D. unless 6. …………… who saw the robbery should contact the police. A. Somebody B. One C. Anyone D. Someone 7. Donny …………… this route when she was a child. A. take B. took C. used to take D. could take 8. My father now wishes he …………… five years younger. A. would be B. were C. to be D. had been 9. Youngsters now enjoy …………… when they have free time. A. going; to trek B. going; trekking C. to go; trekking D. to go; to trek

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