单项选择题
A. What about making it a little earlier B. I have no idea. C. Let’s go together. D. Thank you all the same. E. Do you like basketball F. When and where shall we meet G. It doesn’t matter H. What are you going to do
A．except B．of C．out of D．among
A．they are innocuous agencies B．they are the causative agents of most human cancer C．they seem to be infections to many people D．they are generally thought to be relevant to most cancer in man