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英数第四周周一1.Therearetwoclocks.ClockAgoesoneminuteslowereveryhourandClockBgoesthirtysecondsfastereveryhour.Nowstartthetwoclocksatthesametime,howmanyhoursdoseittakebeforeclockBisonehouraheadofClockA?2.Whatisthesurfaceareaincm2ofthesolidfigureshownifthecubesmeasure1cmoneachside?3.Acubemeasures10cm×10cm.Threecutsaremadeparlleltothefacesofthecubeasshowncreatingeightseparatesolidswhicharethenseparated.Whatistheincreaseinthetotalsurfacearea?4.Thefirsttwotermsofasequence（数列）are1and1,theeachtermafterwardsisobtainedbyaddingupthereciprocals(倒数）oftheprevioustwoterm,thenwritingthereciprocalsoftheresult.Pleasewritetheeighthtermofthissequence.5.Findthemissingterminthesequence：12512?586.Whatnumberis“?”?7.Asshowninthefigure:abigcubeiscomposed(组成)bymanysmallcubes.Asmallcubeistakenawayfromitsvertex(顶点).Howmanycubesareleft?8.Lookatthepicturescarefullyandthink:A=0,B=9,C=6,D=?9.Thereare7redballs,8whiteballsand9blueballsinabox.Weneedtotakeout______ballssoastoguaranteethatthereshouldbeatleastoneballineachcolour.10.Wehavethreegroupsofnumbers.GroupA:1,4,7,10and13;GroupB:2,5,8,11and14;GroupC:3,6,9,12and15.Nowwepickoutonenumberfromeachgroupandaddthemup,sowecanget_____differentsums.答案：1.40(h)2.26(cm2)3.600(cm2)4.5.276.4407.338.2(2点)9.1810.13