According to the author,what may be the possible carriers of bird flu? By saying "bird flu viruses appear to exist in ducks in

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问题 According to the author,what may be the possible carriers of bird flu?
By saying "bird flu viruses appear to exist in ducks in a low-pathogenic form" (Para. 6), the author suggests that infection ______.

选项

答案doesn’t usually lead to severe illness and death

解析定位到第六段可知，作者提到bird flu viruses appear to exist in ducks in a low-pathogenic form是想表明，传染通常不会导致严重的疾病和死亡。

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大学英语六级

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According to the author,what may be the possible carriers of bird flu? By saying "bird flu viruses appear to exist in ducks in

大学英语六级

Televisionwasinventedin1939.Intheearly1950s,itenteredintoourhousehold.Sincethen,millionsofchildrenhavegrown

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