What is known about the influenza virus? -题库考试答案搜索网

What is known about the influenza virus?

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2022-01-02 02:37

A、It was first found in a group of very old birds.
B、All the different strains can be found in wild birds.
C、It existed over 100 million years ago.
D、It can survive in many different places.

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试题解析

[解析] 见本文第一段最后一句。有证据显示病菌通过候鸟从一个地方，一个洲传带到另一个地方，另一个洲。由此可以看出病菌可以在不同的地方存活。

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