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wouldKC)30.Whydoolderpeopleshowslowreactionstotheexperiment?mericanA.Theyoftenpressthewrongkeys.gtoo12同ants.B.Theyhaveaslowermentalspeed.C.Theyaremorecarefulindecisions.D.Theyhavemorequestionstoanswer.【解析】细节理解题
从最后一段中的Instead,wethinkthatoldertestsubjectsaremainlyslowerbecausetheyreplymorecautiouslyandconcentratemoreonavoidingmistakes可知，老年参与者回答问题慢，是因为他们更谨镇、不想出情
(A)31.Whatisasuitabletitleforthetext?A.YourbrainslowsdownlaterthanthoughtB.OlderpeoplereactslowerthanyoungadultsC.Youneeddomoretostopmentalspeeddecline0ego0D灯日)D.Thecommonsenseaboutmentalspeedistrue数中见一通从属用器度动法抛】【解析】主管大意题
全文讲迷了人们的思维逃度在最初的几十年里变化很小，这超乎我们以前的认识
DAmaterialmadefromreeyeledwoodisfivetimesstrongerthannaturalwoodandcanbemadefromanywoodby-product(副产品)，includingshavingsandsawdust(锯末).Woodisahugelymultipurposematerial,butmillionsoftonnesgointolandfilleachyear.Tobuildatrulycirculareconomy,woodwillneedtobere-usedonagranderseale.0OrlandoRojasattheUniversityofBritishColumbia.Canada,andhisteamhaveinventedaprocessthatdissolves(溶解)lignin(木质素)，aglue-.likecomponentinsideplantcellwalls,andexposescellulosenanofibrils,whicharetinyfibresalsofoundintheplantcellwall.Themethodinvolvesasolvent(溶剂)calleddimethylacetamide(二甲基乙酰睃)，sedinthepresenceoflithiumchloride(氯化锂).Whentwopiecesofwoodtreatedinthiswayarebroughttogether,thenanofibrilsbindtocreatewhattheresearcherscalla"treated"pieceofwood.Althoughthisnolongerlookslikenaturalwood,ithasbettermechanicalproperties.Testsshowitismoreresistanttobreakingthanstainlesssteel.【#微"Wegetamechanicalstrengththattakestheplaceofthestrengthoftheoriginalmaterial,”saysRojas..“Itworksbecauseweusetheinherent(周有的)propertiesofcellulose,whichisamaterialthatbindstogetherverystronglybysomethingcalledhydrogenbonding."Notonlycanwoodtreatedthiswaybere-usedtocreatenewobjects,butthetreatmentprocesscanbeperformedrepeatedlyonthesamepiecesofwoodtoextendtheirworkinglifetimes..话s的wyfY由rtoidgvos1面gsn3om232mt"Thisisareallyelegantwaytotreatwood,usingacommoncellulosesolvent,recoveringandenhancingthemechanicalpropertiesofnature'swondermaterial."saysSteveEichhornat英语试题第41页
材料二如图为“和田河流域示意图”,如表为“和田河上游年降水量与年径流量季节占比”。(1)该河上游春、夏季降水量差别不大,但径流量差异显著,结合河流的补给类型分析其原因。(6分)(2)从气候角度解释该河含沙量大的原因。6分)(3)分析该河水文特征对下游地区地貌的影响。(6分)
7.高铁通车后,各地旅游景点覆盖的变化及对旅游市场的影响是①七日游空间差异扩大②七日游空间差异缩小③市场竞争将趋向激烈④市场竞争将趋向缓和A.①③B.①④C.②③D.②④
(3)材料二中A、B两幅地貌景观图片,以流水侵蚀作用为主的是图,该地貌河谷横剖面呈形,最有可能出现在河流的(填“上”、“中”或“下”)游地区。(3分)
