leadingin?有这个环节么?应该是listeningin吧

　　ListeningIn

　　Task1:WeatherForecasting

　　1.B2.D3.C4.A5.D

　　Task2:WrongWeatherForecast

　　1.Theyareplanningtohavetheirpicnicontheweekend.

　　2.Theywillbeabletohaveavolleyballmatch,oneclassagainstanother.

　　3.It’llbefine,andmaybealittlecloudy,butthere’llbedefinitelynorain.

　　4.Thoseweathermanareuseless.

　　5.Allthepollutionandtheholeintheozonelayerareresponsibleforthechangeableweather.

　　Task3:GlobalClimateChange

　　Globalclimateiscausesbythegreenhousegasesintheloweratmosphere.Thesegasesarelargelyduetotheburningupofgas,coalandoil,andthedestructionofforests.Scientistsestimatethat,by2100,theaveragesurfacetemperatureoftheearthwillriseby1.5-3.5℃andglobalaveragesealevelwillriseby15-95cm.Allcoastalcitieswillbeatriskasaresultoffloodingandstormsurges.Clearly,globalclimatechangeisbecomingagreatthreattoourenvironment.

　　Task4:AnAnnouncement

　　Fridaylooksreallygood.Sunnyalldaywithadaytimetemperatureof70degrees.ButbundleupFridaynight,asthetemperaturewilldropsharply.OnSaturday,itwillbecoldandcloudyinthemorningwithstrongwinds.Intheafternoon,there’sagoodchanceofsnowflurries,andthetemperaturewillonlyreach37degrees!OnSundaymorningitwillbecloudy,withsomerainshowersintheafternoon.Buttemperatureswillriseto50degrees.