摘要： The vaccine was used to the whole population bird flu . A. keep; out of B. protect; from C. keep; away D. make; out of

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The vaccine(疫苗)was used to _ the whole population _ Bird Flu(禽流感)．

The vaccine(疫苗)was used to _______ the whole population _______ Bird Flu(禽流感)．

keep; out of

protect; from

keep; away

make; out of

The vaccine(疫苗)was used to _______ the whole population _______ Bird Flu(禽流感)．