下面关于我国行政主体表述错误的是：（）

我国行政法的渊源包括哪些：（）A.行政法规、地方性法规和行政规章B.法律解释和国际条约C.自治条例和单行条例D.宪法和法律

测压管水头线沿流程可以上升，也可以下降。

总水头线一定是沿程下降的。

两断面总头线下降的高度就是这两个断面之间的（）

表征液体质点运动的轨迹线是（）

不透水的铺盖、板桩及底板与地基的接触线，即第一根流线，称为()。

在土石坝的各种排水型式中，()不能降低浸润线。

同一构件相连纵向钢筋的绑扎搭接接头不宜相互错开。

6、：检查玻璃的角是否方正，以及木骨架的尺寸是否准确，如果有变形现象，应校正后再使用。在校正好的木骨架内侧，固定玻璃板靠位压线条，定出玻璃安装的位置线。（）

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?

风管最主要的连接方式是法兰连接。（）

选择水泵的主要依据是流量和扬程。（）

给排水工程识图中的字母“W”可以表示排水管道或污水管道。（）

闸阀的特点是关闭严密，且安装有方向性。（）