Accordingtothepassage,oneimportantchangeinUnitedStateseducationbythe1920'swasthat______.
A)mostplacesrequiredchildrentoattend
B)theamountoftimespentonformaleducationwaslimited
C)newregulationswereimposedonnontr aditionaleducation
D)adultsandchildrenstudiedinthesameclasses
正确答案：A答案：A
[试题分析]细节判断题。
[详细解答]文章第二段指出：By1920schoolingtoagefourteenorbeyondWascompulsoryinmoststates，andtheschoolyearWasgreatlylengthened。显然，可以判断A为正确答案。
