a whole与the whole区别

题目

a whole与the whole区别
friendship is of so sweet and enduring a nature that it will last through _____ whole lifetime.
A.a B.the
为什么?

答案

last through a whole life 持续整个一生
这是一句类似格言的话,不针对某个人,所以就用 a whole life 这个表达法了.