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Linhnguyen
2 năm trước
Một HS phát biểu rằng: khi ánh sáng truyền từ môi trường trong suốt này sang môi trường trong suốt khác thì góc tới và góc khuất xạ có độ lớn khác nhau. Nếu góc tới tăng (hoặc giảm) bao nhiêu lần thì góc khuất xạ cũng tăng (hoặc giảm) bấy nhiêu lần. Theo e phát biểu như thế có chính xác ko ?Vì sao?
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Read the passage and answer the questions . I’ll never forgot my visit to Hong Kong. When I arrived, everyone was busy with the preparations involved. The local people were cleaning every corner of their houses and decorating the walls with red pieces of paper. Another custom is cook fish on New Year’s Eve and eat it the next day. I was really looking forward to New Year’s Eve Dinner. The whole family got together and everyone was really happy. I noticed that the grandparents and parents gave children red envelopes with money inside. After dinner they all started playing cards for good luck. Nobody went to sleep before midnight. At midnight the great even begins: fireworks! I was really amazed. All around the city I could see and hear colourful fireworks. It was incredible and I was really excited . 1. What did the local people decorate their houses and the walls? ................................................................................................... 2. Do they cook fish on New Year’s Eve? ......................................................... .......................................... 3. What did the grandparents and parents gave children? ................................................................................................... 4. Did they go to sleep before midnight? .............................................................................................

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