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; if
B. where; if
C. which; when
D. when; where
网友回答
A. that; if
(答案→)B. where; if
C. which; when
D. when; where
解析：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。