题目内容
根据所给中文和句意,填入正确的单词。
In winter, the bird flu(禽流感)________(病毒)is easier to spread.So we should be more careful.
答案:virus
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题目内容
根据所给中文和句意,填入正确的单词。
In winter, the bird flu(禽流感)________(病毒)is easier to spread.So we should be more careful.