企业持银行汇票购入材料一批，取得增值税专用发票，价款30万元，增值税3.9万元，材料已入库。假定不考虑其他事项，购入材料时，应贷记（）科目。

PartIIReadingComprehension(30分)Directions:Thereare3passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA,B,C,andD.YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheet.PassageoneInarecentstudy,neuroscientistsfoundthatplayingfast-pacedvideogamescouldhelpimprovedyslexic(诵读困难的)children’sreadingspeed,andtheimprovementsdidnotfadewithtime.Researcherstestedthereadingabilityoftwogroupsof10-year-olddyslexicchildrenafteronegrouphadplayedactionvideogamesandtheotherplayednon-actionvideogames.Eachgroupwascomposedof10childrenwhoplayed80minutesofvideogamesadayforninedays,equaling12hoursofplayperchild.Theirreadingskillsweremeasuredonanumberoffactors,includinghowfasttheyreadwordsandhowaccuratelytheyreadthem.Resultsshowedthatimprovementsinreadingspeedachievedfromplayingfast-pacedvideogamescouldevenexceedimprovementsgainedfromayear’sintense,traditionaltherapies.Scientistsaimedtoprovethatthere’sacorrelationbetweenadyslexicchild’svisualattentionspanandtheirabilitytoread.Actionvideogamesaredistinguishedfromnon-actionvideogamesbysuchcharacteristicsasgamespeed,ahighsensory-motorload,andpresentationofmultiple,peripheral(外围的)stimuli.Actionvideogameplayersconstantlyreceivebothexternalandinternalfeedbackontheirperformance,producinglearning.Itturnedoutthattheassumptionsofresearcherswerecorrect.Actionvideogameplayersdefeatedtheirnon-actionpeersinimprovements.Onlyactiongamekidsshowedgeneralreadingimprovements,upto40percent,whilenon-actionreadersshowednoimprovement.Theactiongamersalsoimprovedtheirbasictextreadingbyasmuchas60percent,whilenon-actiongamersshowedamoremodest5percent-10percentgain.Thoughmoreresearchisneededtonaildownthespecificrolethatactiongamesplayintheimprovements,theresearchersclaimedtheirdataisthestart.Theybelievetheirfindingsshowthatattentioncanbestudiedandefficientlytrainedduringinfancy.Thiscanpavethewayforlow-resource-demandingearlypreventionprogramsthatcoulddrasticallyreducetheincidentofreadingdisorders.21.Whatdoestherecentstudydiscussedinthepassageshow?

花样跳绳的制作材料有（)

钢材标号Q235B中的235表示材料的抗拉强度为235MPa。

7、憎水性材料的润湿角θ应（）。

8.8级高强螺栓中的小数点及后面的8（即0.8）表示螺栓材料的屈强比为0.8，抗拉强度为800MPa。

屋顶的坡度形成中，材料找坡是指（）来形成。

水泥砂浆是指由水泥、砂、水搅拌而成的砌筑材料。（）

只要两个杆件的截面面积相同、所用材料相同，它们的极限弯矩就是相同的。（）

12、当润湿角()时，此种材料称为亲水材料材料。

13、材料在潮湿空气中吸收水分的性质称为()。

30、作业成本法以成本动因作为分配成本的基础，因此它能提供比传统成本法更为精确的成本信息。

1、材料吸水后，将使其（）提高。

3、材料的孔隙率增大时，其性质保持不变的是（）。

8、具有调节室内温度和湿度功能的材料为（）。