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【1】At the Lesson of Geography（在地理课上）A teacher put his finger on some place on the map and said:“What is this, John?”John got up and said: “Your forefinger．”老师用手指在地图上指着某一丛尘个地方，说：“穗郑告约翰，这是什么呀？”约翰站起身来，说：“是你的食指。”【2】At the Lesson of Physics（在物理课上）Teacher: Explain, please, the effect of cold and heatand give examples．Pupil（学生）:Cold contracts, heat expands．That"s why days are shorter in winter and longer in summer．老师：请解释一下冷和热的作用，并举例说明。学生：热胀冷缩。这就是夏天日子长冬天日子猜明短的原因。

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