阅读理解。阅读下列短文,从给的四个选项(A、B、C和D)中,选出最佳选项。EducationintheUnitedStatesiscompulsoryforchildrenuptoabouttheageofsixteen.Mostyoungpeoplestayinschoollongerthanthat.Mostgraduatefromhighschoolattheageof17or18.Almosthalfofthesehighschoolgraduatescontinuetheireducationatacollegeoruniversity.Educationformostyoungpeopleinthiscountryisfreeuptothetimetheygraduatefromhighschool.Thereareprivateschools,butmostparentssendtheirchildrentopublicschools,wherestudentsdonotpaytuition.Whenyoungpeoplegotocollege,however,theymustpaytuitionatapublicuniversityoraprivateuniversity.Universitycostsaregoingupalot：privateuniversitieshavebecomeveryexpensivebecausethegovernmentdoesnothelpthem.Whopays?Theparentsofchildrenincollegemayhavetopaymore,oroftenstudentsmayhavetofindjobs.Thesestudentshavetoworryaboutassignmentsandgradesandalsoabouttheirjobs.Iftheyworktoomuchattheirjobstheymaybeabsentfromclassormissassignmentsormaketoomanyerrorsontests.Theymayevenfailtheircoursesandhavetoleavetheuniversity.Formanystudents,theproblemofgettinganeducationisnotjustaproblemofhomeworkandexams.Theyalsohavetomakemoneytopayfortuition.Andprofessorsdon'tteachthemhowtodothat!1．IntheUnitedStates,almosthalfofthehighschoolgraduates________.A．gotocollegesanduniversitiesB．neednotpayanytuitionC．havetoenteropenuniversitiesD．workhardtoavoiderrorsontests答案：A本题考查细节题。由文章第二段第一句“Almosthalfofthesehighschoolgraduatescontinuetheireducationatacollegeoruniversity”可知，几乎有一半的中学生毕业都在大学或学院里继续深造。2．WhichofthefollowingstatementsisNOTtrue?A．Mostparentsprefertosendtheirchildrentopublicschoolsratherthantoprivateschoolsduetotuition.B．Educationisnotfreeuntilthestudentsgraduatefromhighschool.C．Universitycostsareontheincrease.D．Thestudentsmaybeabsentfromclassiftheyworkovertime.答案：B本题考查细节理解。由文章第二段第二句“Educationformostyoungpeopleinthiscountryisfreeuptothetimetheygraduatefromhighschool.”可知，在这个国家，大多数年轻人接受的免费教育可持续到中学毕业，而这正与B的意思相反，因此B是正确答案。3．Theprivateuniversitystudentshavetopaymoremoneyfortuitionbecause________.A．thegovernmentdoesnotfinancethepriva