如题，52题为什么不选b啊，一直没明白？请教高人指导，谢谢先！！！

不是enroll而是complete,所以选A

文章的第2段提到“For this reason，the international community has committed itself to getting all the world’s children into primary school by 2015，a commitment known as Education for All.”表明选项A是正确答案。选项B是以前教育目的的衡量标准，在原文的第3段提到“instead of just enrolling for classes，which used to be the measuring stick for education”。选项C的错误是偷换概念，全世界的孩子不等于88个国家。

呵呵，谢谢老师，谢谢！