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hoangtragiang
2 năm trước
Câu 26. Cho tana + cot a = m. Tìm m để tan a + cot a = 7. C. m = -3. A. m =9. B. m = 3. D. m = +3.
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XI. Read the following passage then answer the questions: Antarctica is snow-covered continent. The average temperature at the South Pole is - 51 C. Few plants or animals can live on the land- it is too cold for them. There are a few seientists from different countries who live and work on special bases in Antarctica. On midsummer's day (December 22), there is daylight for 24 hours and so during this period a few tourist ships and planes come to see this strange land. But n winter there is no daylight for months. It must be a terrible place during the winter. The snow is always there- winter and summer- but in fact, little snow falls in the year (an average of 12-20 cm). People say that it can be a beautiful place. 'At first, it appears frightening but after a little time, some people fall in love with it. -Questions: 1. What is the weather like in Antarctica? 2. Why can few plants and animals live in Antarctica? 3. Where do the seientists come from? 4. How many tourist ships and planes conme to see this strange land? 5. What is always there in winter and summer?

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