While there are some differences in the education systems in many countries in the world

问题补充：

While there are some differences in the education systems in many countries in the world, education is .

A. humorous

B. universal

C. faithful

D. foolish

答案：

A. humorous

(答案→)B. universal

C. faithful

D. foolish

解析：句意：因为世界上许多国家在教育制度上存在着不同，所以教育是普遍的。Humorous幽默的；universal普遍的；faithful忠实的；foolish愚蠢的，选B。