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    精英家教网 > 高中英语 > 题目详情
    China’s New Food Act provides for a food recall system    to producers have to stop production      their food isn’t up to standards.
    A．that; ifB．where; ifC．which; whenD．when; where
    B
    第一空考查定语从句，先行词是recall system，定语从句中不缺主宾表，却地点状语，用where引导定语从句，第二空考查if引导的条件状语从句，句意：中国新的食品法提供了一个召回系统，如果食品不达标准，生产者必须停止生产。选B。
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