It'saboutTimeDoyouknowwhattimeitis？Ifyoudo，youprobablyarelookingataclockorLongago，peopledidn'thaveclocksorwatcheslikeyoudo．Whenthesunrose，theygotupandwhenthesunwentdown，theywenttobed．Theytoldti

　　It'saboutTimeDoyouknowwhattimeitis？Ifyoudo，youprobablyarelookingataclockorLongago，peopledidn'thaveclocksorwatcheslikeyoudo．Whenthesunrose，theygotupandwhenthesunwentdown，theywenttobed．Theytoldtimebythepositionofthesuninthesky．

　　Peoplediscoveredthattheycoulduseastickandthesuntotelltime．Thiswascalledashadowclock．Theyputastickintheground，pointingstraightup．Thedirectionofthestick'sshadowandhowlongorshortitwastoldthemthetime．

　　Abetterkindofshadowclockwascalledasundial．Sundialhadapointerandabase．Thepointercastashadowonmarksaroundthebase．Peoplecouldtelltimebyreadingthemarks．

　　Butshadowclockswerenotgoodfortellingtimeoncloudydaysoratnight．

　　Onekindofclockthatdidn'tneedthesunwasawaterclock．Awaterclockwascontainerwithatinyholeinthebottom．Waterwouldsteadilydropoutofthehole．Marksontheinsideofthecontainershowedthetime．Ittookonehourforthewatertogodownonemark．

　　Anotherkindofclockthatdidn'tneedthesunwasacandleclock．Youwouldknowthetimebyhowmuchofthecandlehadmelted（熔化）．Thecandlehadmarksdownitssidetoshowthehours．

　　Sometimespeopleusedcandleclocksasalarmclocks．Theyputanail（钉子）inthecandleatthetimetheywantedtowakeup，hangingashoeonthenail．Whenthecandlemelteddown，thenailfelloutandtheshoehitthefloorwithaBANG!

　　Nowthereareallkindsoftimepieces，fromtallgrandfatherclockstowatcheswewearonourwrists（手腕）．Mostclocksrunonelectricityfrombatteries．

　　Therearemanymoretypesofclocks，too．Clockshanginandonbuildings．Clocksareeverywhere!

　　61．Didpeoplehaveclocksorwatcheslikeyoudolongago？___

　　62．Whatdidsundialhave？___

　　63．Howlongdidittakeforthewatertogodownonemarkinwaterclock？___

　　64．Howwouldyouknowthetimewhenyouuseacandleclock？___

　　65．Whatdoesthewriterwanttotellus？___．