2. 外语
  3. According to the passage, scientists have discovered that influenza viruses ______. According to the passage a great variety of

According to the passage, scientists have discovered that influenza viruses ______. According to the passage a great variety of

admin2009-05-28  47
问题 According to the passage, scientists have discovered that influenza viruses ______.
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://kaotiyun.com/show/FQvK777K
本试题收录于： 大学英语三级A级题库大学英语三级分类
0

大学英语三级A级

大学英语三级

相关试题推荐
随机试题
最新回复(0)