真题解析雅思听力中的排列组合规律
<p> 当我们学习累了的时候，特别是做听力题累了的时候，大家可以设着研究一下雅思听力考试的设置和答案，其实里面有我们高中学的排列组合规律。</p><p> 给大家拿一个雅思真题的答案给大家看看排列组合规律是如何体现的？</p><p> 在剑桥雅思真题6中的第四个测试第二个<span word="section">section</span>中的11-13题</p><p> 通过题目我们可以看的到，这是一个配对题</p><p> 题目如下：</p><p> <span word="Questions">Questions</span> 11-13</p><p> <span word="Which">Which</span> <span word="team">team</span> <span word="will">will</span> <span word="do">do</span> <span word="each">each</span> <span word="of">of</span> <span word="the">the</span> <span word="following">following</span> <span word="jobs">jobs</span>?</p><p> <span word="Choose">Choose</span> <span word="THREE">THREE</span> <span word="answers">answers</span> <span word="from">from</span> <span word="the">the</span> <span word="box">box</span> <span word="and">and</span> <span word="write">write</span> <span word="the">the</span> <span word="correct">correct</span> <span word="letter">letter</span>, <span word="A">A</span>-<span word="D">D</span>, <span word="next">next</span> <span word="to">to</span> <span word="questions">questions</span> 11-13.</p><p> <span word="A">A</span>. <span word="the">the</span> <span word="blue">blue</span> <span word="team">team</span></p><p> <span word="B">B</span>. <span word="the">the</span> <span word="yellow">yellow</span> <span word="team">team</span></p><p> <span word="C">C</span>. <span word="the">the</span> <span word="green">green</span> <span word="team">team</span></p><p> <span word="D">D</span>. <span word="the">the</span> <span word="red">red</span> <span word="team">team</span></p><p> 11. <span word="checking">checking</span> <span word="entrance">entrance</span> <span word="tickets">tickets</span> _______</p><p> 12. <span word="preparing">preparing</span> <span word="refreshments">refreshments</span> _________</p><p> 13. <span word="directing">directing</span> <span word="car">car</span>-<span word="park">park</span> <span word="traffic">traffic</span> _________</p><p> 我们从题目中可以看到，这个题是从四个里面选出三个来，而且肯定不可以有重复的选项出现，也就是每个选项只能用一次。在看完选项之后，我们应该把视线锁定在题目上，大家知道雅思听力是按照题目的顺序播放的，我们看一下听力中红黄蓝绿四个队出现的顺序，然后在去看答案，就会发现有很有意思的排列组合规律了。</p>
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