In 1993, Congress passed XX Amendment, enacted after the son of YY was raped and killed.
,enacted (包括逗号)后面是划线部分,前面是大意。。。
考点:时态 + 名词所有格 + 句子结构
1, has been enacted / enacted
2,after 后面 was raped/killed ; 一个选项是after raping and killing of son of YY
3, 还有一个考点是 YY's son / son of YY's / son of YY ...