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leuyennhi41
2 năm trước
Bài 7 (0,5 điểm): Cho hình thang cân ABCD có AB // CD và AB<CD. AH và BK là các đường cao. Chứng minh rằng: a ) ΔΑΗD = ΔΒΚC. b) HD= CD - AB/2, HC = CD+ AB/ 2 Ai làm nhanh đúng 5 sao
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I. Choose the correct word A, B or C for each gap to complete the following passage. I go on the Internet every day, but I’ve never (1) ______ more than an hour at a time online. I’ve got laptop and also a smartphone, so I can (2) _________ the internet anywhere. Today, for instance, I’ve been (3) ______ three times. Mainly I just (4) _________ my friends. I read online magazines and I look (5) ______ information, too. I also compare prices of thing, (6) __________ I’ve never bought anything online because I don’t think it’s safe. I’m not an Internet addict, but some of my friends (7) _________. One friend of mine always looks (8) ________ because he spends all night online. Although he’s got a bad marks for the exams, he hasn’t (9) _____ his habits. In my experience, it’s very useful for people who use the Internet (10) _______. 1. A. spend B. spending C. spent 2. A. have B. use C. play 3. A. online B. internet C. computer 4. A. write B. email C. send 5. A. at B. in C. for 6. A. because B. but C. although 7. A. is B. were C. are 8. A. tired B. hard C. happily 9. A. change B. to change C. changed 10. A. sensible B. sensibly C. sensibleness

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