A. It is not enough to learn a foreign language for three years.
B. It requires time and effort to master a foreign language.
C. A child can learn a foreign language better if her mother is around.
D. A child can learn a foreign language faster than an adult.

“给定资料3”中提到，“文化建设的根基在基层”。请结合你对这段话的理解，参考“给定资料”，自拟题目，写一篇文章。
要求：(1)立意明确，内容充实；
(2)逻辑合理，结构完整；
(3)语言流畅，1000字左右。