MarkKendon'sFeelingsAbout...

　　Myfeelingsaboutsciencehavereallychanged.Ineverusedtoenjoyscience,butlastyearIchangedschools,andthescienceteachersatmynewschoolareexcellent.Thesciencefacilitiesareverygood,withlaboratoriesthathaveallthelatestequipment.Ourchemistryteacher,Mr.Longford,takesustopublicsciencelecturesaboutfourtimesaterm,andthesearealwaysveryinteresting,asthelecturersarepeoplewhohavemaderealdiscoveriesintheirareaofscience.Thefactis,Canadahasmanyfirst-classscientists.Inthelasttwentyyears,sevenCanadianscientistshavewontheNobelPrize!TheNobelPrizeisthehighestscientificprizethereis,soweshouldbeveryproudofthat.

　　I'mbecomingmoreandmoreinterestedinphysics,andhavedecidedthatIwanttostudyitatuniversity.I'mgoingtotrytogotoeitherMontrealorOttawaUniversity,asbotharesupposedtohavegoodPhysicsDepartments.Myparentsareastonished.TheyalwaysthoughtIwouldbecomeanEnglishteacher!

　　PassageA

　　Itishardtothinkofaworldwithoutmetals.Differentmetalshavedifferentuses,forexample,steelisusedincars,andironisusedinelectricalequipment.Whenweusemetals,itisimportanttoknowhowtheyreactwithdifferentsubstances,forexample,waterandoxygen.Thereactionofmetalswiththesesubstancescanbeputinorder.Hereisatablewiththemetalsthatreactmostatthetop,andthemetalsthatreactleastatthebottom.

　　PassageB

　　ASimpleScientificExperiment

　　Belowisadescriptionofasimplescientificexperiment.Itshowsushowironreactswithairandwithwater.

　　Ironindryair

　　Method

　　1.Putsomeironnailsatthebottomofatesttube.

　　2.Pushsomecottonwooldownthetube.

　　3.Leavethetubeforoneweek.

　　Result

　　Afteroneweek,thenailshavenotrusted.

　　Conclusion

　　Irondoesnotrustindryair.

　　Ironinair-freewater

　　Method

　　1.Half-fillatesttubewithwater.

　　2.Boilthewaterforthreeminutes.(Thismakessurethereisnoairinthewater.)

　　3.Puttwoorthreecleannailsinthewater.

　　4.Addsomeoiltothewater.Thiswillkeepairoutofthewater.

　　5.Leavethetubeforoneweek.

　　Result

　　Thenailsdonotrustinthetubewithair-freewater.

　　Conclusion

　　Irondoesnotrustinair-freewater.

　　Ironinordinarywater

　　Method

　　1.Half-fillatesttubewithwaterandaddtwoorthreecleannails.

　　2.Leavethetubeforoneweek.

　　Result

　　Thenailsrustinthetubewithordinarywater.

　　Conclusion

　　Ironrustsinordinarywater.