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Today, hundreds of weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this. So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may be able to forecast the weather for a week or more ahead(提前). 41. Satellites travel . A. in space B. above space C. above the ground D. in the atmosphere 42.Why do we use the weather satellites to take pictures of the atmosphere? A. Because clouds form there. B. Because the weather forms there. C. Because the weather satellites can do it easily. D. Because the pictures can forecast the weather. 43. Meteorologists forecast the weather . A. without studying satellite pictures B. before they receive satellite pictures C. when they have received satellite pictures D. after they have compared the new satellite pictures with the earlier ones 44. Maybe we’ll soon be able to forecast the weather for . A. one day B. two days C. five days D. seven days or even longer 45. The main idea of this passage is that satellites are now used in . A. taking pictures of the earth B. receiving pictures of the atmosphere C. weather forecasting D. doing other work in many ways 五、根据句意及首字母提示完成单词(每小题1分，满分5分) 46. There are a lot of clouds today. It is going to r later on. 47. It will p snow. You should put on warm clothes. 48. Look at the c in the sky. They look like some sheep. 49. It is often s in winter in the northeast of China. 50. The wind is so s today that it’s difficult to walk. 六、用所给单词的适当形式填空(每小题1分，满分5分) 51. The best time (visit) that country is in spring. 52. It’s a good idea (bring) your swimsuit when you visit Hainan. 53. My son (be) three years old next year. 54. She likes to lie on the grassland on (sun) days. 55. Hainan is usually very hot and sunny (compare) to many other places. 七、句型转换(每小题2分，满分10分) 56. Three years later he left the city.(改为同义句) He left the city three years. 57. It’s about 7, 000 miles from Beijing to New York.(对画线部分提问) is it from Beijing to New York? 58. The wind is very strong.(改为同义句) The wind is . 59. It has more than 200 cm of rain every year.(改为同义句) It has 200 cm of rain every year. 60. Tom runs faster than any of the other students in his class.(改为同义句) Tom runs faster than in his class. (责任编辑：admin) |