中考英语书面表达优秀范文赏析.doc

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1、·解：（1）A（0，2），B（，1）．（2）．（3）如图1，可求得抛物线的顶点D（）．设直线BD的关系式为，将点B、D的坐标代入，求得，，∴BD的关系式为．设直线BD和x轴交点为E，则点E（，0），CE=．∴ △DBC的面积为． （4）如图2，过点作轴于点M，过点B作轴于点N，过点作轴于点P． 在Rt△AB′M与Rt△BAN中，∵AB=AB′，∠AB′M=∠BAN=90°-∠B′AM，∴Rt△AB′M≌Rt△BAN．∴B′M=AN=1，AM=BN=3，∴B′（1，）．同理△AC′P≌△CAO，C′P=OA=2，AP=OC=1，可得点

2、C′（2，1）；将点B′、C′的坐标代入，可知点B′、C′在抛物线上．（事实上，点P与点N重合）中考英语书面表达背诵范文（二） 一、GreatchangesinmyhometownMorethantwentyyearsago,myhometownwasjustasmall,oldandpoortown.Mostofpeoplewerefarmers.Therewerefewfactories.Thepeopledidn’thaveenoughfoodtoeatandworeoldclothes.Theyhadahardlife.Gr

3、eatchangeshavetakenplaceinthepasttwentyyears.Thepeoplehavefoundalotofwaysofmakingmoney.Nowtherearemanytallbuildings.Theyareverybeautiful.Roadsarewideandclean.Peoplecantakebusesordrivetheirowncarstogotowork.Manypeoplehavecellphonesandpersonalcomputers.People’slivingcond

4、itionshaveimprovedalot.Thankstothegovernment’sefforts.myhometownisbecomingmoreandmorebeautiful. 二、SavetheearthHowtoprotecttheenvironmenthasbecomeoneofthebiggestproblemsintheworld.It’sourdutytoprotectourenvironment.Nomatterwherewelive,weshoulddosomethingtokeepourneighbo

5、rhoodcleanandtidy.Wecancollectwastepaperorotherwastethingsforrecycling.Weshouldplantmoretreesandweshouldpreventthosefactoriesfrompouringwastewaterintorivers,lakesandfields.Weshouldn’tleaverubbisheverywhereandspitinpublicplaces.Wemustn’tpicktheflowersorsteponthegrassinp

6、ublic.Ifeveryonetrieshisbesttoprotecttheenvironment,theworldwillbecomemuchmorebeautifulandourlifewillbebetterandbetter.  三、ImproveourenvironmentGoodenvironmentcanmakepeoplefeelhappy.Toimprovetheenvironmentmeanstoqualifyourlife.Whatshouldwedotoimproveourenvironment?Wesh

7、ouldplantmoretrees.Andweshouldpreventthosefactoriesfrompouringwastewaterintorivers,lakesandfields.Wheneverweseelitterontheground,weshouldpickitupandthrowitintoadustbin.Don’tspitinpublicplaces.Don’tdrawonpublicwalls.It’sourdutytokeepourearthcleanandtidy. 四、Pollutionarou

8、ndusInrecentyearsourlifeisbecomingbetterandbetter.Butourenvironmentisbecomingworseandworse.It’sverybadforourlife.Nowm