The stronger the is the more quickly a person will learn a foreign language. That is to

问题补充：

The stronger the is, the more quickly a person will learn a foreign language. That is to say, it is up to whether he has an interest in the foreign language.

A. inspiration

B. ambition

C. motivation

D. aspiration

答案：

A. inspiration

B. ambition

(答案→)C. motivation

D. aspiration

解析：考查名词辨析。 A 灵感，启示 B 雄心，野心 C 动机，意图 D 渴望，野心，根据句意为一个人的意图越强，学英语就会越快 ，也就是说要取决于他是否对外语感兴趣。所以选C 。