题目内容：

The film is set in the period__the divide between rich and poor was greater than it is now.答案是when为何不用which引导,

优质解答

这句话的意思翻译为：这部电影是以这个贫富分配差距比现在大的时期为背景的.一看就明白了,这里是“时期”,是时间,which只能是物,不能引导时间从句