If cauliflowers are exposed from extreme temperatures, the heads get discolored.

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问题 If cauliflowers are exposed from extreme temperatures, the heads get discolored.

选项 A、are exposing from
B、are exposed to
C、expose from
D、expose to

答案B

解析 本题考查固定用法。句意为:如果花椰菜曝光于极度的温度之下,正面就会褪色。expose to“暴露于”,符合句意。又因为cauliflowers和谓语exposed是动宾关系,故用被动语态。所以,答案是B。
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