2. 职称英语
  3. According to the passage, scientists have discovered that influenza viruses ____

According to the passage, scientists have discovered that influenza viruses ____

游客2024-06-30  51
问题 According to the passage, scientists have discovered that influenza viruses ______ . [br] According to the passage a great variety of influenza can appear when  ______ .
选项 A、H and N spikes are produced
B、animal and bird viruses are combined
C、dissimilar types of viruses recombine
D、two viruses of the same type are contracted
答案 C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3657340.html
相关试题推荐
随机试题
最新回复(0)