The generation makes it difficult for parents to understand their children’s opinions.A.

问题补充：

The generation makes it difficult for parents to understand their children’s opinions.

A. division

B. gap

C. separation

D. interval

答案：

A. division

(答案→)B. gap

C. separation

D. interval

解析：词义辨析。 A.部门；分割 B.间隙；缺口 C.分开；间隔 D. 间隔；距离句意：代沟让父母很难理解他们孩子们的意见。Gap多指天然形成的间隙裂口等含义，故选B。