2. 外语
  3. Agriculture was a step in human progress______which subsequently there was not anything comparable until our own machine age.

Agriculture was a step in human progress______which subsequently there was not anything comparable until our own machine age.

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问题 Agriculture was a step in human progress______which subsequently there was not anything comparable until our own machine age.
选项 A、in
B、for
C、to
D、from
答案C
解析 定语从句。先行词agriculture与从句的关联是there was not anything(that was)comparable to agriculture until our own machine age，关系代词which代替先行词后，此处选择的正是能与comparable搭配的介词to。
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