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完形填空练习Insomeareasoftheworldtheweatherisverychangeableandthisfactplaysanimportantpertinthedailylivesofthepeople.16earliesttimes,menhaveobservedthesky,thewind,andtheatmosphere,aswellasavarietyof

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完形填空练习
In some areas of the world the weather is very changeable and this fact plays an important pert in the daily lives of the people. _16_ earliest times ,men have observed the sky ,the wind ,and the atmosphere ,as well as a variety of other weather signs ,so as to make weather _17_ which has not been accurate ,Now there are government bureaus in many places _18_ study weather conditions very carefully.They can use a lot of scientific _19_ to help them make their forecasts.They have special balloons ,ships and airplanes to help them increase their accuracy ,and they make _20_ of radar ,and computer to gather necessary information.Today ,accurate _21_ forecasts are helping million of people everywhere to save their lives and their property.When a pilot takes _22_ from an airport ,he can know what kind of weather to expect when he _23_ his destination.When a storm is moving at a certain direction ,the people in that area can learn of it in _24_ and prepare for it.Maybe _25_ it will be possible to change the path of a storm. 16.A.During     B.In       C After        D.Since17.A.saying     B.speaking   C.prediction   D.condclsion18.A.where      B.when      C.this         D.that19.A.device      B.equipment   C.idea        D.tool20.A.use       B.usage       C.useful       D.usefulness21.A.atmosphere   B.climate    C.weather    D.air22.A.off      B.up       C.over      D.down23.A.arrives   B.gets      C.reaches   D.comes24.A.advance   B.before    C.achead   D.beforehand.25.A.other day  B.some day  C.next day   D.another day
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