PricetonReview Question ~

In 1990, a charitable foundation presented the local branch of a national chain of grocery stores with a humanitarian award for wheelchair access ramps that it had installed well before local law required.

A) wheelchair access ramps that it had installed well before local law required.

B) wheelchair access ramps that had been installed well before local law required it

C) the installation of wheelchair access ramps well before local law required

D) having installed wheelchair access ramps well before local law required them

E) having installed wheelchair access ramps well before local law required

Answer is D, but "them" 不会有指代不清的問題嗎?

汗，我选了C，看了你的答案才想通

D中them 从逻辑上应指代wheelchair access ramps ，而从语法上就近指代也对

至于可否指代stores，建议从中心词方面分析入手