2019届高三英语模拟试卷（有答案）和应试作文指导（合集）

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1、2019届高三英语模拟试卷（有答案）和应试作文指导（合集）  C.About25%ofthetotalbill.20.Whatcanwelearnfromthespeech?A.AmericanssmokelessthanEuropeansB.AsianssmokelessthanEuropeansC.ThelegalsmokingageinAmericais21.第二部分阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上

2、将该项涂黑。A DryiceisCO2insolidform,withatemperatureofabout-78.5℃.Unlikecommonice,dryicedoesn'tmeltintoaliquid.Whendryicemelts,itturnsintoagas.Sowhenyouseedryice"smoking",it'sfrozenCO2meltingintoitsgaseousstate.Dryiceisapopularmatterinscientificexperiments.Itcreatesproje

3、ctsthatlookcool.    Experiment:Healthydryicepopsicles（棒冰）    Thisdryiceexperimentwillcatchpeople'seye,especiallylittlekids'becausethedryiceisgoingtobeusedtomakewhattheyounglovetoeat.Itshouldtakeyouabout10minutesorlesstohaveafrozentreattoenjoy.    Materials    Onelar

4、geblockofdryice    Alargespoon    Popsiclesticks    Onecupofyourfavoritejuice    AtallglassfilledwithwaterDirections    Usethelargespoontomakeapopsicle-shapedspaceinablockofdryice.Youcansettheiceonapieceofclothonyourtabletodothiswork.Ofcourse,keepinmindthatit'sokayi

5、fit'snotexactlypopsicle-shaped.    Addapopsiclesticktothemiddleofthespacesothatwhenyoupourintheliquid,itwillfreezearoundthepopsiclestick.    Holdthepopsiclestickinplaceandwaitafewminutesforyourpopsicletoharden.Afterseveralminutes,takeawaythepopsiclefromtheblockofdry

6、iceandputitintoatallglassofwaterforafewseconds.Dothistowarmupthepopsiclejustabit.Otherwise,itwillbetoocold.21.Accordingtothetext,what'sthemaindifferencebetweendryiceandcommonice?  A.Theirforms.                      B.Theirshapes.   C.Theirtemperatures.              

7、   D.Theirstateswhentheymelt. 22.What'sthefirststeptodotheexperiment?  A.Tofillthetallglasswithjuice.         B.Topourthejuiceintothespace.  C.Tomakespaceinthedryiceforjuice.   D.Toputasticktothemiddleofthedryice. 23.Howdoesthedryiceworkintheexperiment?   A.Itgiveso

8、ut"smoke".                B.Itismixedinthejuice.C.Itmakesthejuicefreeze.             D.Itmakesthepopsiclelookcool.B    SomeofAustraliancyc