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According to the passage, scientists have discovered that influenza viruses ______ . New strains of viruses are transmitted to
According to the passage, scientists have discovered that influenza viruses ______ . New strains of viruses are transmitted to
admin
2013-09-04
69
问题
According to the passage, scientists have discovered that influenza viruses ______ .
New strains of viruses are transmitted to man by ______ .
选项
A、A type of wild pig
B、diseased lower animals
C、a group of migrating birds
D、a variety of means
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/4teK777K
本试题收录于:
大学英语三级A级题库大学英语三级分类
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大学英语三级A级
大学英语三级
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