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问题: 定语从句4

The seventeenth century ws one _____ many advance where made in science.
A that B which C where D when
请简要分析并翻译...

解答:

D
这里先行词引导的是时间.在十七世纪,科学领域内取得了很大发展.
when和where引导定语从句时从句都是完整的.many advance were made in science. 是完整句子.所以用when就行了.