阅读理解
Whydoweneedtothrowlessaway?Therearetworeasons.Oneisthatsomeresources（资源）arenonrenewable（不可再生的）Thatmeansthereisonlyacertainamountofthatresourceintheworld.Oneexampleofthisisoil.Whenweuseupalltheoilintheworldtherewillbenomore.
Thereisanotherreasonforthrowinglessaway.Allofourtrashhastobeputsomewhere.Oftenitisputintogarbagedumps（垃圾场）.Muchofthattrashwillbethereforhundredsofyears.Thedumpswillbefilledupwithallthistrash.
Therearethreewaystocutdownontrash.
Onewayistorecycle.Whenyourecyclesomethingitmeansitismadeintoanothershapeandusedagain.Oldnewspapermaybecomepaperbags.Aglassjarcanbemelted（熔化）andmadeintoabottle.
Anotherwaytocutdownontrashistoreusethings.Youcanwashanduseagainabottlethatcanholdmustard（芥末酱）orsomethingelse.
Thethirdwaytocutdownontrashistoreducetheamountoftrashyoumakestopbuyingthingthatyoudon’tneedinthefirstplace.Thatreducetheamountoftheearth’sresourcesthatyouuse.
1.Howmanyreasonsdoweneedtothrowlessaway?
A.Three B.five C.two
2.Whenyoureusesomethingitmeans .
A.itismadeintoanothershapeandusedagain
B.itisusedagain
C.itisn’tusedanymore
3.Allthewaysofcuttingdownontrashinthepassageareto .
A.recycleandreusethings
B.recyclesandreducetheamountoftrashyoumake
C.reusethingsrecycleandreducetheamountoftrashyoumake
4.Ifabrokenplasticboxischangedintoaplasticrulerthewayisto .
A.recycle B.reuse C.reduce
5.Theword“reduce”inthepassagemeans .
A.还原 B.减少 C.增加
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