Over the years the European Union has made great efforts to the safety of food and protec

问题补充：

Over the years the European Union has made great efforts to the safety of food and protect the health of its people.

A. discover

B. ensure

C. revise

D. react

答案：

A. discover

(答案→)B. ensure

C. revise

D. react

解析：动词辨析题。A. discover发现 B. ensure 确保 C. revise 修订 D. react 反应句意：多年来欧盟已经尽力确保食品安全保护人民健康。根据语境选B

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