阅读理解。Nowsatellitesarehelpingustoforecasttheweather.Theyareinspaceandtheycanreachanypartoftheworld.Thesatellitestakepicturesofatmosphere(大气).Sothescientiststherecanseetheweatherofanypartoft

　　阅读理解。

　　Nowsatellitesarehelpingustoforecasttheweather.Theyareinspaceandtheycanreachanypartoftheworld.Thesatellitestakepicturesofatmosphere(大气).Sothescientiststherecanseetheweatherofanypartoftheworldandhowtheweatherwillchange.

　　Todaynearlyfivehundredweatherstationsinsixtycountriescanreceivesatellitepictures.Whentheyreceivethenewpicturestheycompare(比较)themwiththeearlierones.Perhapstheymayfindthatthecloudshavechangedduringthelastfewhours.Thismaymeanthattheweatheronthegroundmaysoonchangetoo.Intheirnextweatherforecasttheycantellpeopleaboutit.

　　Sotheweathersatellitesareofgreathelptothescientistsatthestation.Inthepasttheycouldforecasttheweatherforabout24or48hoursearlier.Nowtheycanmakegoodforecastfor3or5days.Soonperhapstheymaybeabletoforecasttheweatherforaweekormoreahead.

　　根据短文内容判断正(T)误(F)。

　　( )1.Theweathersatellitesinspacecanhelpthescientiststoknoweverything.

　　( )2.Changingcloudsintheatmospheremeansthatweathermaychange.

　　( )3.Withoutsatellitesscientistscouldforecasttheweatherfor3or5daysahead.

　　( )4.Todayeverycountryhasitsownweatherstationwhichcanreceivesatellitepictures.

　　( )5.Themainideaofthispassageisthatsatellitesarenowusedinweatherforecast.