_____ three influenza type A virus subtypes(子类型) have been found in pigs.A.By farB.As far as C.So fa

题目简介

_____ three influenza type A virus subtypes(子类型) have been found in pigs.A.By farB.As far as C.So fa

题目详情

_____ three influenza type A virus subtypes(子类型) have been found in pigs.
A.By farB.As far as C.So farD.Till far
题型:单选题难度:偏易来源:不详

答案

C
短语辨析。     A.更,尤其 B.至于 C.迄今为止 D.直到远方。句意:迄今为止,耽搁流感A型病毒子类型已经在实验品中被发现。故选C。

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