第14题:[单选题]He is optimistic that he will win the election. A.positive B.dismayed C.frustrated D.incredible 参考答案:A 他乐观地认为将会赢得这场比赛。optimistic“乐观”。positive“确信”，最符合题意，例如：I am positive he will leave．我确信他会离开。dismayed“失望的”，例如：We are dismayed at his refusal．他的拒绝让我们都很失望。frustrated“受挫折的”，例如：I feel frustrated in my life．我感到生活很不顺心。incredible“难以置信的”，例如：an incredible experience一次难以置信的经历。
第18题: [填空题]What is the main topic of the talk
The main topic of this talk is to offer advice on ______. 参考答案:how to increase one’s energy 答案解析:[听力原文]11-15
Do you find yourself tired all the time although you get enough sleep Then maybe th
