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

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

试题答案

D

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。