题目内容
—What can we do to ______ bird flu (禽流感) from spreading?
—Try not to buy or eat the chicken that has not been checked.
A. prevent B. cause
C. discover D. protect
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题目内容
—What can we do to ______ bird flu (禽流感) from spreading?
—Try not to buy or eat the chicken that has not been checked.
A. prevent B. cause
C. discover D. protect