题目

--What a cold day it is! --_________ . A. Yes, but it's going to be colder B. No, I think it's cold today C. Sorry, I'm afraid I can't D. Yes, it isn't cold 答案：答案：A 解析：此句意为：今天真是个冷天啊! B与上句矛盾，C是对“邀请”的回答，D 自相矛盾，故选A。如果a与-2互为倒数，那么a是（ ）A．-2B．-C．D．2