The 1.__________take pictures of the atmosphere (大气), because this is where the weather forms (形成).They send these pictures to the 2.station.So the scientists there can see the weather of any part of the world and tell how the weather will change. Today,nearly five hundred weather stations in sixty countries can 3.__________satellite pictures.4.__________they receive the new pictures,they compare (比较) them with the earlier ones.Perhaps they may find that the clouds have 5.__________during the last few hours.This may mean that the weather on the ground may soon change,too.In their next weather 6.__________,they can tell people about it.So the weather satellites are of a great 7.__________to the scientists at the station.In the past they could forecast the weather for about 24 or 48 hours 8. ________.Now they can make good forecasts for three 9.__________five days. Soon,perhaps, they may be able to forecast the weather 10.__________a week or more ahead.

Satellites Forecast the WeatherNow satellites are helping to forecast (预报) the weather.They are in space,and they can reach any part of the world. The 1.__________take pictures of the atmosphere (大气), because this is where the weather forms (形成).They send these pictures to the 2.station.So the scientists there can see the weather of any part of the world and tell how the weather will change. Today,nearly five hundred weather stations in sixty countries can 3.__________satellite pictures.4.__________they receive the new pictures,they compare (比较) them with the earlier ones.Perhaps they may find that the clouds have 5.__________during the last few hours.This may mean that the weather on the ground may soon change,too.In their next weather 6.__________,they can tell people about it.So the weather satellites are of a great 7.__________to the scientists at the station.In the past they could forecast the weather for about 24 or 48 hours 8. ________.Now they can make good forecasts for three 9.__________five days. Soon,perhaps, they may be able to forecast the weather 10.__________a week or more ahead.

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