For EACh BlAnk thErE ArE Four ChoiCEs mArkEDA,B,
C、AnD
D、you shoulD ChoosE thE on
E、thAt BEst Fits into thE pAssAgE. thEn mArk thE CorrEsponDing lEttEr on thEAnswEr shEEt.
E、CEllspACing=0 CEllpADDing=0 wiDth="100%" BorDEr=0>D、vAlign=top wiDth="100%">EvEry sEConD,{{u}} 56 {{/u}}hECtArE oF thE worlD’s rAinForEst is DEstroyE
D、thAt’s onE to two FootBAll FiElDs.
this{{u}} 57 {{/u}}rAtE oF DEstruCtion hAs sErious ConsEquEnCEs{{u}} 58 {{/u}}thE EnvironmEnt. sCiEntists EstimAtE, For ExAmplE, thAt 137{{u}} 59 {{/u}}oF plAnt, insECt or AnimAl BEComE{{u}} 60 {{/u}}EvEry DAy DuE to logging. inBritishColumBiA,
{{u}} 61 {{/u}},sinCE 1990,thirtEEn rAinForEst vAllEys hAvE BEEn ClEAr Cut,142 spECiEs oF sAlmon hAvE AlrEADy BEComE ExtinCt, AnD thE{{u}} 62 {{/u}}oF grizzly BEArs, wolvEs AnD mAny othEr CrEAturEs ArE thrEAtEnE
D、logging,
{{u}} 63 {{/u}},proviDEs joBs , proFits, tAxEs For thE govErnmEnt AnD ChEAp proDuCts oF All kinDs For ConsumErs, so thE govErnmEnt is{{u}} 64 {{/u}}to rEstriCt or Control it. muCh oFCAnADA’s ForEstry proDuCtion{{u}} 65 {{/u}}mAking pulp AnD pApEr.ACCorDing to thECAnADiAn pulp AnD pApErAssoCiAtion,CAnADA {{u}} 66 {{/u}}34%oF thE worlD’s wooD pulp AnD 49% oF its nEwsprint pApEr. iF thEsE pApEr proDuCts CoulD BE proDuCED in somE othEr wAy,CAnADiAn ForEsts CoulD BE{{u}} 67 {{/u}}. rECEntly, A possiBlE{{u}} 68 {{/u}}wAy oF proDuCing pApEr hAs BEEn suggEstED By AgriCulturAlists AnD EnvironmEntAlists: A plAnt CAllED hEmp. hEmp hAs BEEn CultivAtED By mAny CulturEs For thousAnDs oF yEArs. it proDuCEs FiBrE whiCh CAn BE{{u}} 69 {{/u}}pApEr, FuEl, oils, tExtilEs, FooD, AnD ropE. For mAny CEnturiEs, it wAs EssEntiAl to thE EConomiEs oF mAny CountriEs{{u}} 70 {{/u}}it wAs usED to mAkE thE ropEs AnD CABlEs usED on sAiling ships; ColoniAl ExpAnsion AnD thE EstABlishmEnt oF A worlD-wiDE trADing{{u}} 71 {{/u}}woulD not hAvE BEEn possiBlE{{u}} 72 {{/u}}hEmp. nowADAys, ships’ CABlEs ArE usuAlly mADE From wirE or synthEtiC FiBrEs, But sCiEntists ArE now suggEsting thAt thE CultivAtion oF hEmp shoulD BE{{u}} 73 {{/u}}For thE proDuCtion oF pApEr AnD pulp.ACCorDing to its proponEnts, Four-timEs As{{u}} 74 {{/u}}pApEr CAn BE proDuCED From lAnD using hEmp rAthEr thAn trEEs, AnD mAny EnvironmEntAlists BEliEvE thAt thE{{u}} 75 {{/u}}sCAlE CultivAtion oF hEmp CoulD rEDuCE thE prEssurE onCAnADA’s ForEsts.
A．sinCE
B．BECAusE
C、As
D、whilE