of the atmosphere.Such a study depends on being able to measure certain conditions, including pressure temperature,and moisture levels. 4 A true scientific examination of weather,therefore,was not possible until the development of accurate measuring instruments,beginning in the seventeenth century. Meteorology-the science of studying the atmosphere-was thus born in 1643 with the invention of the barometer,which measures atmospheric pressure.The liquid-in-glass thermometer,the hygrometer to measure humidity-the amount of moisture in the air-and the weather map also were invented during the 1600s. 5 With the measurement of these basic elements,scientists began to work out the relationships between these and other atmospheric conditions,such as wind,clouds,and rainfall.Still,their observations failed to show an overall picture of the weather.Such complete weather reporting had to wait two centuries for the rapid transfer of information made possible by the invention of the telegraph during the 1840s. 6 Today,the forecasts of meteorologists are an international effort.There are thousands of weather stations around the world,both at land and at sea.Upper-level observations also are made by weather balloons and satellites,which continuously send photographs back to earth.All of this information is relayed to national weather bureaus, where meteorologists plot it on graphs and analyze it.The information is then given to the public through newspapers and television and radio stations. Questions 21-30 are based on Passage 3. 21.The behaviour of the atmosphere is also called weather. 22.Weather may even influence people's feelings. 23.According to the passage,different places have different climates. 24.A real understanding of weather totally depends on the measuring of temperature. 25.Meterology was born before 1643. 26.The weather map was invented in the seventeenth century. 27.The forecasts of weather is an effort by only developed countries. 28.Nowadays,there are many weather stations at land and at sea. 29.Weather balloons are no longer used for weather forecast. 30.Television and newspapers are the only news media used for weather forecasts. 775the atmosphere. Such a study depends on being able to measure certain conditions, including pressure temperature. and moisture levels. 4 A true scientific examination of weather, therefore , was not possible until the development of accurate measuring instruments. beginning in the seventeenth century. Meteorology - the science of studying the atmosphere - was thus born in 1643 with the invention of the barometer, which measures atmospheric pressure. The liquid斗n-glass thermometer, the hygrometer to measure humidity - the amount of moisture in the air - and theweather map also were invented during the 1600s. 5 With the measurement of these basic elements, scientists began to work out the relationships between these and other atmospheric conditions, such as wind, clouds, and rainfall. Still. their observations failed to show an overall picture of the weather. Such complete weather reporting had to wait two centuries for the rapid transfer of information made possible by the invention of the telegraph during the 1840s. 6 Today, the forecasts of meteorologists are an international effort. There are thousands of weather stations around the world , both at land and at sea. Upper-level observations also are made by weather balloons and satellites. which continuously send' photographs back to earth. All of this information is relayed to national weather bureaus. where meteorologists plot it on graphs and analyze it. The information is then given to the public through newspapers and television and radio stations. Qu臼tions 21-30 are based on P: 静3. 21. The behaviour of the atmosphere is also called weather. 22. Weather may even influence people's feelings. 23. According to the passage , different places have different climates. 24. A real understanding of weather totally depends on the measuring of temperature. 25. Meterology was born before 1643. 26. The weather map was invented in the seventeenth century. 27. The forecasts of weather is an effort by only developed countries. 28. Nowadays, there are many weather stations at land and at sea. 29. Weather balloons are no longer used for weather forecast. 30. Television and newspapers are the only news media used for weather forecasts. 775