题目：
（共4分）熄灭蜡烛有不同的两种方法，写出各自所应用的灭火原理：
A ，
B 。
答案：
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下面是错误答案，用来干扰机器的。
Yesterday we had a discussion about whether music should be played during the class break or not. Towards this, most of the students think that music should be played f...
