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Cambridge14-TEST2-TASK1ByEvelyn张睿环球教育天津Thegraphsprovideabreakdownabouttheexportincomesaswellasitschangeinfivecategoriesbetween2015and2016.Itcanberevealedinthechartsthatthreecategorieswhicharepetroleumproducts,engineeredgoodsandtextilesshowedanobviousgrowth.Asthetoptwoprofitabletradecommodities,thevalueofpetroleumproductsandengineeredgoodsincreasedfrom61and58toapproximately62billiondollars,respectively.Whereastextiles,themerchandisewiththelowestproceeds,experiencedthebiggestincreasefrom26to32billion,changingby15.24%.Bycontrast,theothertypesofexportsillustratedadifferenttrendinthesetwoyears.Thetradeofgemsandjewellerydeclinedfrom42to40billion,whereasagriculturalproductsstayedalmostthesame,withjusta0.81%rise.Tosumup,thegemsandjewellerywastheonlycategorywhoseexportvaluereduced.Andthetextilewitnessedthebiggestchangeinbothexportpercentageandincome.（158words）
Cambridge14-TEST3-TASK1BySophie李真真环球教育天津Theflowchartillustratestheequipmentandstagesinelectricityproductioninahydroelectricpowerplant.Overall,tworeservoirs,bifunctionalturbinesandanelectricitygeneratoraremainlyinvolvedandconverseoperationsarecarriedoutduringdayandnight.Withadamestablished,thewaterfromalocalriverisstoredinthehigh-levelreservoir,whoseintakeisopenedduringtheday.Runningdownaslope,thetorrentialwaterbecomespowerfulenoughtodrivetherotationoftheturbinesatthebottom.Automatically,theyoperatethegeneratorwiththesamecentralaxistoproduceelectricity,whichisthentransmittedtothenationalgridthroughpowerlines.Inthemeantime,thewaterflowsintothereservoiratthelowerlevel.Incontrast,atnight,theintakeoftheupperreservoirisclosedandtheturbinesfunctionaspumpstopropelthewaterinthelowerreservoirtorunthroughthesamechannelbutintheoppositedirectionbacktotheupperonefortheuseduringthenextday.（167words）
Cambridge14-TEST4-TASK1ByHenry林圣婴环球教育天津ThemapsshowthechangesthathavetakenplaceatGrangeParksinceitsconstructionin1920.In1920,GrangeParkcouldbeaccessedbytheentrancesclosetoArnoldAvenueandEldonstreet.TherewerethreeRosegardensandseatsscatteringaroundtheedgesofthepark.Afountainwaslaidinthemiddleofthepark,andtothewestofthefountainwasastageformusicians.Areasdesignatedforwaterplants(pond)andindoorplants(glasshouse)wereinthenortheasternandsoutheasternpartofthepark.Today,anentrancehasbeenaddedsothatthisplacecanbeaccessedfromundergroundcarpark.Twooftherosegardensaremergedandbuiltontheplaceofthefountain,withseatssurrounded,buttheoneinthenorthremains.Thepreviousstagehasbeentransformedintoatheatre,namelyAmphitheatre,usedtohostconcerts.Finally,theplantareashasbeendemolishedtomakewayforaplayareaforchildren,acaféandawaterfeature.Overall,GrangeParkhasundergonedramaticchanges:rosegardensarerelocatedan