While there are some differences in the educational systems in many countries in the world, education itself is ______.
A.beneficial
B.accessible
C.pulsory
D.universal
网友回答
D解析形容词辨析。A有益的；B可(或易)接近的;可(或易)进入的；C强制的,义务的；D全体的;普遍的;一般的；句意：尽管在世界上很多国家的与体系有一些差异，但是教育本身却是共同的。