【passage1TherearethreecommoncalendarsystemsinusebytheUnitedStateshighereducationinstitutions.SemesterSystemsareoneofthem.Theacademicyearisdividedintotwoterms,eachofwhichprovidesforabout15weeksofinstructionplusawee】

　　passage1

　　TherearethreecommoncalendarsystemsinusebytheUnitedStateshighereducationinstitutions.SemesterSystemsareoneofthem.

　　Theacademicyearisdividedintotwoterms,eachofwhichprovidesforabout15weeksofinstructionplusaweekforfinalexamination.Thefallsemester,consideredthefirsttermoftheacademicyear,usuallybeginsinSeptemberorlateAugust,anditisincreasinglycommonforthetermtostartearlyenoughtobecompletedbeforethetwo-weekChritmasholiday.ThesecondorspringsemesterusuallybeginssometimeinJanuaryandendsinlateMayorearlyJune.Mostschoolsscheduleaoneortwo-weekvacationinMarchorApril.Avariationofthesemestersystembeingtriedbysomeinstitutionsisthe"4-1-4"calendar,whichhasafour-monthfallsemesterendinginDecember,aone-monthshortterminJanuaryforwhichstudentsmayenrolliftheywish,andanotherfour-monthsemesterbeginningearlyinFebrury.

　　1.IntheUnitedStates,thestudentswillstayinschoolforabout_____ayear.

　　a.32weeksb.30weeksc.16weeksd.15weeks

　　2.Theacademicyearbegins___

　　a.inlateAugustb.sometimeinJanuary

　　c.inlateSeptemberd.inlateMay

　　3.Thefirsttermends___

　　a.infallb.inMayc.afterChristmasholiday

　　d.beforeChritmasholiday

　　4.Thesecondtermlastsabout____

　　a.sixmonthsb.inAugustc.inFebruaryd.inDecember

　　5.Inthe"4-1-4"calendarsystem,theone-montheshorttermis____

　　a.inJanuaryb.inAugustc.inFebruaryd.inDecember