PeriodOneWarmingUp&ReadingⅠ
用适当的介、副词填空1.Thatprobablydoesnotseemmuch________youorme,butitisarapidincreasewhencompared________othernaturalchanges
2.Sohowhasthiscome________anddoesitmatter
3.Allscientistssubscribe________theviewthattheincrease________theearth’stemperatureisdue________theburning________fossilfuels________coal,naturalgasandoiltoproduceenergy
4.Theproblembeginswhenweaddhugequantities________extracarbondioxideintotheatmosphere
5.Weknowthatthelevels________carbondioxidehaveincreasedgreatlyoverthelast100________150years
6.Hefoundthatbetweentheseyearsthecarbondioxide________theatmospherewent________fromaround315parts________around370partspermillion
7.Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresulted________thisincreaseincarbondioxide
8.However,theattitudesofscie