题目内容
Recently, many people dare not eat because of H7N9 (禽流感).
A. eggs or chickens B. eggs or chicken C. egg or chickens D. egg or chicken
B
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题目内容
Recently, many people dare not eat because of H7N9 (禽流感).
A. eggs or chickens B. eggs or chicken C. egg or chickens D. egg or chicken
B