问题
选择题
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
答案：B
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