2. 职称英语
  3. 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  48
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。
转载请注明原文地址:https://tihaiku.com/zcyy/3015655.html
相关试题推荐
随机试题
最新回复(0)