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thumap200502
2 năm trước
Ai giải giúp mình * Chứng minh đường thẳng vuông góc mp Ta có nên đt d (α) *Tính góc giữa đt và mp ĐƯỜNG THẲNG VUÔNG GÓC MẶT PHẲNG Bài 1. Cho hình chóp S. ABCD đáy là hình vuông, SA vuông góc với (ABCD). a. Chứng minh rằng: BC vuông góc với (SAD) và CD vuông góc với (SAD) b. Chứng minh rằng: BD vuông góc với (SAC) c. Kẻ AE vuông góc với SB. Chứng minh rằng: SB vuông góc với (ADE)
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1 / 2 Exercise 1. Rewrite the following sentences in reported speech with infinitives. 9. “Why doesn’t she talk to me any more?” I thought to myself. ………………………………………………………………………………… 10. “What are you going to do with your scholarship?” Hang asked Huong. ……………………………………………………………………………… 11. “Where do you live?” she said to him …..……………………………………………………………………………… 12. “Why do you want the job?” she said to him …..…………………………………………………………………………… 13. “How did you hear about it?” she said to him …..………………………………………………………………………… 14. “How much do you expect to earn?” she said to him …..……………………………………………………………………………………… 15. “When can you start?” she said to him …..…………………………………………………………………………… 16. “What time is it, Ha?” she asked …..……………………………………………………………………………… 17. “How long have you worked for this company?” she asked …..………………………………………………………………………… 18. “Why has he been working so hard?” she asked …..……………………………………………………………………………………… 19. “Why did you do it when I told you not to?” she said to me …..……………………………………………………………………………… 2 / 2 20. “Why didn’t you come at ten o’clock?” she said …..…………………………………………………………………………………… REPORTED SPEECH II. Change the following sentences into indirect sentences: 1. “I’m tired,” Trevor said. …………………………………………………………………………………………… 2. “Sorry. I wasn’t listening,” Hang said. …………………………………………………………………………………………… 3. “Is this your pencil?” he asked his pupil. ……………………………………………………………………………… 4. “I’m going to Paris soon,” she said. ……………………………………………………………………………………… 5. “It’s time to start revising (ôn lại) for the exam,” the teacher said. ………………………………………………………………………… 6. “The film will be interesting,” I thought. …………………………………………………………………………………… 7. “I can’t help you because I have too much to do,” she said. ……………………………………………………………………………………… 8. “Anne has bought the tickets.” She said to me. …………………………………………………………………………………… 9. “It took me three hours to get here because the roads are flooded” he told me. ……………………………………………………………………………… 10. “I think it’s a crazy (điên dại/ ngu xuẩn) idea. It’s won’t work” she said. ………………………………………………………………………………………… 11. The receptionist says “Breakfast is served between 7.00 and 9.00”

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