China’s New Food Act provides for a food recall system    to producers have to s

题型：不详难度：来源：

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

答案

B

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。