英语阅读题EverybodyusesA.M.andP.M.tomeanbeforenoonandafternoon.Butdoyouknowexactlywhattheymeanandhowtheycameintobeing?Weknowthattheturningoftheearthmakesthesunandstarsseemtomoveacrossthesky.Daylight,ofcou
英语阅读题
EverybodyusesA.M.andP.M.tomeanbeforenoonandafternoon.Butdoyouknowexactlywhattheymeanandhowtheycameintobeing?
Weknowthattheturningoftheearthmakesthesunandstarsseemtomoveacrossthesky.Daylight,ofcourse,beginswiththesunrisingintheeastandendwiththesunsettinginthewest.Beinghighinthesky,betweenthesetwopositions,thesunhastraveledaquarterjourney,andhalfofthedaylighthourshavebeenspent.
Therefore,bynoticingwherethesunstoodinthesky,earlymanlearnedhowtotellthetimeoftheday.Atnight,thestars,wereobserved.Hecouldalsoknowthetime.
Theimportantthinginkeepingtimeistoknowtheexactmomentofnoon.Foreachofus,whereverweare,nooniswhenthesunisdirectlyoverhead.Thinkofanimaginaryline,ameridian(子午线)drawnacrossthesky,goingfromthenorthpointofyourhorizondowntothesouthpoint.
Whenthesuncrossesyourmeridian,itisnoonforyou.Whenthesunstillliestotheeastofyourmeridian,itismorning.Afterthesunhascrossedthismeridian,itisafternoon.
TheLatinwordfor"midday"ismeridiem,fromwhichcomesourwordantemeridiem,whoseshortformisA.M.,whichmeansbeforemidday.P.M.istheshortformforpostmeridian,meaningaftermidday.
66.TheEnglishword"meridian"means______.
A)P.M.inLatin
B)PostmeridieminLatin
C)antemeridieminLatin
D)meridieminLatin
67.Earlymanlearnedhowtotellthetimeoftheday______.
A)byobservingthepositionsthestarsexistinthesky
B)bydrawingameridianacrossthesky
C)bynoticingwherethesunstoodinthesky
D)byknowingtheexactmomentofnoon
68.Whichofthefollowingistrueaccordingtothepassage?
A)P.M.istheshortformforpostmeridieminLatinstandingfor"inEnglish".
B)A.M.meansbeforenooninEnglishandantemeridieminLatin.
C)Daylightbeginswiththesunrisinginthewestandendswiththesunsettingintheeast.
D)MeridieminLatincomesfromourwordmeridian.
69.Itistheexactmomentofnoon_____.
A)thatthesuncrossestheimaginaryline
B)whenthesunstillliestotheeastofth