Over the years the European Union has made great efforts to _______ the safety of food and protect the health of its people.
A．discoverB．ensureC．reviseD．react
B
動(dòng)詞辨析題。A. discover 發(fā)現(xiàn)   B. ensure 確保    C. revise 修訂  D. react 反應(yīng) 句意：多年來(lái)歐盟已經(jīng)盡力確保食品安全保護(hù)人民健康。根據(jù)語(yǔ)境選B
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