题目

You choose to be a winner!The Winners Club is a bank account specially designed for teenagers. It has been made to help you better manage your money. The Winners Club is a transaction account (交易账户) where you receive a key-card so you can get to your money 24/7— that’s 24 hours a day, 7 days a week!It’s a club with impressive features for teenagers:● No account keeping fees!You’re no millionaire so we don’t expect you to pay large fees. In fact, there are no account keeping or transaction fees!● Excellent interest rates!You want your money to grow. The Winners Club has a 已知条件p：x2+x+1≤0  条件q：x2+2x-3＞0，则￢q是￢p 的（　　）A．充要条件B．既不充分也不必要的条C．必要而不充分的条件D．充分而不必要的条件件