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2 năm trước
bt2: cho đường tròn (O;R)và dây AB (AB nhỏ hơn 2R)gọi P là điểm chính giữa của cung nhỏ AB.Gọi C là Điểm bất kì của dây AB. PC cắt đường tròn tại D.Chứng minh PA là tiếp tuyến của đường tròn ngoại tiếp tam giác ACD
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Ex4: Complete the sentences using although, despite, in spite of, however, or nevertheless. Sometimes, two answers are possible. 1. ______________ the story of the film was good, I didn’t like the acting. 2. I went to see the film _____________ feeling really tired. 3. I really enjoyed the Water War____________ most of my friends said it wasn’t a very good film. 4. ___________ careful preparation, they had a lot of difficulties in making the film. 5. ___________ the film was gripping, Tom slept from beginning to end. 6. The film didn’t receive good reviews from critics. ____________, many people went to see it 7. ___________ the silly story, many people enjoyed the film. 8. They spent millions of dollars on making the film. _____________, it wasn’t as successful as expected. 9. ____________ Jaws is one of Spielberg’s first films, it is one of his best. 10. ____________ the film was a bit frightening, I really enjoyed it.

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