单项选择题
A．a new type of virus B．type A virus C．a sub-group of type B virus D．a virus only existing in Asia
A. I think so. B. Don’t mention it. C. Please take it easy. D. What’s the matter E. And you F. I’d love to. G. But he panned to. H. Me, too.
A．because B．however C．besides D．therefore