She had golden hair when she was a child but she got older and older her hair went dark

问题补充：

She had golden hair when she was a child, but she got older and older, her hair went darker and darker.

A. while

B. when

C. after

D. as

答案：

A. while

B. when

C. after

(答案→)D. as

解析：本题是连词的辨析使用。as表示“随着”，通常表示前后动作发生的时间为一致的。when强调在一个动作发生过程中另一个事情突然发生。while表示两个同时进行的持续性动作，且强调主句表示的动作延续到从句所指的整个时间。