TWO: Teacher:We all know that beat causes an object to expand an cold cauese it to contract. Now,can anyone give me a good example?
John:Well ,in the summer the days are long,and in the winter the days are short.
老师:我们都知道热胀冷缩的道理。现在,谁给我举个例子?
约翰:嗯,在夏天天都长,在冬天天都短。
练习:
你能想出来其他的例子么?
答案:
想想也很有道理~哈哈~
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大耳朵编辑:anmy