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1、饼图PieAsshowninthefirstchart,oilwastheworld’smainenergysource,accountingfor37%oftheenergyconsumptionin2005.Followedbycoalandnaturalgas,constituting28%and23%respectively.Bycomparison,theproportionofnuclearpowerwassmall,6%,equatingthatofhydro-electricity.SaudiArabiaaccountsforthelargestprop
2、ortionoftheworld’soilreserves,20%,wellaheadofCanada,thecountrywiththesecondbiggestreserve,14%.BehindCanadaarefourMiddleEastcountries,namelyIran(10%),Iraq(9%),Kuwait(8%)andUnitedArab(8%).Bycontrast,thereservesofVenezuela,Russiaandtheunitedstatesarerelativelysmall,makingup6%,5%and2@respect
3、ively.Theremaining18%isfoundinothercountries.PicThethreepiechartsshowhowuniversitystudentsinthreecountriesspenttheirmoneyintheyear2003.Ingeneral,studentsincountriesAspentslightlymorethanthoseincountryB(US$5,000andUS$4,500respectively).Incomparison,studentexpenditureincountryCwasconsidera
4、blylower,atonlyUS$1,500peryear.Accommodationandfoodwerethetwobiggestitemsofexpenditure.Altogethertheyconstitutedaround60%ofthetotalstudents’expenditureinallthethreecountries.ThedifferenceisthatincountryAandBaccommodationspendingexceededfoodspendingwhilethereversewastrueforcountryC.Theres
5、tofthestudents’spendingwasdividedamongleisure,booksandothers.Leisurespendingconstitutedalargerpercentage(around20%)ofstudentexpenditureinbothcountryAandB,whileincountryCmoremoneywasspentonbooks(12%)thanonleisure(12%).Overall,aswealthdecreased,thepercentageofstudents’spendingonnon-essenti
6、alitemsreduced.柱状图BarPicThisbarchartshowsthechangesintheamountofoildiscoveredworldwideevery5yearsfrom1950to2005andthepredictedfiguresfrom2010to2020.In1950,theworldoildiscoverystoodat20billionbarrelsayear,whichgrewdramaticallyoverthenext15yearstoreachapeakatapproximately56billionbarrelsin
7、1965.However,fromthisyearonwards,thegrowthofoildiscoverywassuddenlyreplacedbyasharplydownwardtrend,withsomeupsanddowns,toapproximately6billionbarrelsayearin2005,about1/10ofitspeakamountin1965.Itispredictedthat7billionbarrelsofoilwillbediscoveredworldwideintheyear2010,andt
