Astudentwenttocollegeafter41allhisschoolexaminations.Thereheputhisnamedownforworldgeography,42afterthefirstday,hedidnotgoto43anymore.Theteachernoticedthatthisstudentwas44absentandthoughtthathehadchangedto45class.Hewasvery46whenhesawtheboy'snameonthelistofstudents47wantedtotakethegeographyexamination48theendoftheyear. Theteacherhadpreparedadifficultexaminationpaper,whichcovered49hehadtaught,andhewaseagertosee50thisstudentansweredthequestions.Heexpectedthathisanswerwouldbevery51;butwhenheexaminedhispapercarefully,hefoundonlyonesmallmistakeinthem.52thissurprisedhimverymuch,hewentthroughthepaper53,butwasstillnotabletofind54onemistake,sohesent55thestudenttoquestionhimabouthiswork. Whenthestudenthad56theroom,theteachersaidtohim,"Iknowthatyoucametomyclassonlyonceonthefirstdayandthatyouhavebeenabsentfromalltheothers.YetIhavefoundonlyonesmallmistakeinyourpaper.57isthat?" "Oh,I'msorryaboutthatmistake,sir,"answeredthestudent."Aftertheexamination,Irealized58!oughttohavewritten.Iwouldnothavemadethatmistake59Ihadnotbeenconfusedbyyour60lecture." 阅读以上短文，回答161-180题。 第41题答案是__________
A.having B.taking C.passing D.failing正确答案C
