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somethingmustbedoneto______thebirdflu.Somethingmustbedoneto______thebirdflu.A)turnoffB)takeoffC)putoffD)keepoff
题目内容：
something must be done to ______ the bird flu.
Something must be done to ______ the bird flu.
A) turn off B) take off C) put off D) keep off优质解答
选d
keep off 避开；防止；挡住
防止禽流感
Something must be done to ______ the bird flu.
A) turn off B) take off C) put off D) keep off
优质解答
keep off 避开；防止；挡住
防止禽流感
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