开始上课时要激发学生的兴趣，然后保持其兴趣和好奇心。表述要清晰。
Start the lesson with a "bang" and sustain interest and curiosity. Speak clearly. .
在物理教学中如何激发学生的学习兴趣，是教师重点研究的课题之一。
How to arouse students? Interest in Physics teaching is one subject for the teachers? Study.
在物理教学中如何激发学生的学习兴趣，是教师重点研究的课题之一。
How to arouse students? Interest in Physics teaching is one subject for the teachers? Study.
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