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According to the author,what may be the possible carriers of bird flu? [br] On w
According to the author,what may be the possible carriers of bird flu? [br] On w
游客
2023-09-15
53
管理
问题
According to the author,what may be the possible carriers of bird flu? [br] On what condition can the birds spread the influenza through migration?
选项
答案
The mutated virus finds its way back into wild populations.
解析
根据题干中的关键词spread和through migration定位到倒数第五段,可知在家禽体内,禽病毒可能变异为像H5N1一样毒性更强的流感病毒,如果此类变异病毒被野鸟感染,这些鸟就会通过迁徙传播流感。
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