思维是能力的核心,训练求异思维,可以培养创新意识和能力．本文利用“求异思维”解决现实生活中的游泳趣题．例1小王沿河逆流游泳而上,途中不慎将水壶掉进河中,沿河流漂走．10秒钟后发现水壶丢失,小王立即返身回游,问小王返身回游多少秒可以追上水壶?析解1 (常规解法)设x秒追上水壶,小王游泳速度为V_1米/秒,水流速度为V_2米/秒．如图1所示,水壶在A处掉入水中,小王从A处游到B处 Thinking is the core of competence. Training for different thinking can cultivate innovative awareness and ability. This article uses the “different thinking” to solve swimming problems in real life. Example 1 Xiao Wang swims up and down the river, accidentally dropping the kettle into the river and drifting along the river. After 10 seconds, I discovered that the kettle was lost. Xiaowang immediately returned to swim. He asked Xiao Wang how many seconds he could swim to catch the kettle. Analysis 1 (conventional solution) Set x seconds to catch up with the kettle. Wang swims at speed V_1. m/s, the flow rate is V_2 m/s. As shown in Figure 1, the kettle falls into water at A, and Wang moves from A to B.