题目

    Gaining the knowledge ________ environmental protection will help you to become a qualified environmentalist. A. addicted to           B. concerned about  C. related to              D. appealed to 答案：C已知函数满足：①是偶函数；②在上为增函数。若，且，则与的大小关系是（  ）A．B．C．D．与的大小关系不能确定