1) Question 1：主旨 = 核心名词 + 关键事件，优先抓音频开头 / 结尾 a) The successful experiment of the light beam. b) The successful experiment of the cool laser. c) The use of cool lasers in medical fields.   d) The use of cool lasers in computer fields. 2) Question 2：目的题可定位音频中‘to/for/in order to’等信号词，或直接匹配‘功能描述’类语句 a) To cool computer exteriors. b) To cool computer interiors. c) To improve the lifespan of computers. d) To improve the performance of computers.

新闻听力Unit 4 News Item 2 第一部分：单项选择题

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