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上课铃响过以后,课室安静地在等待着老师。几十双眼睛盯着老师的出现,目送着她从容地走向讲台。学生照例地循着对待老师应有的礼节起立,齐声喊:“老师好。”老师亲切地给学生答礼;和谒地注视着同学,就这样开始了教学活动。“在自然界中那一种元素分布得最广?”教师向所有的学生,提出了这—问题。差不多学生们用同一个声音说出了答案“氧”。老师在肯定了学生回答正确以后,引申地说:”我们今天所要讲的就是氧。”这时,在黑板上写了“第三章氧和空气”这—课题。
After the bell rang, the classroom waited quietly for the teacher. Dozens of pairs of eyes staring at the teacher’s appearance, watched her calmly toward the podium. As usual, students follow the courtesy and etiquette of their teachers and shout in unison: “The teacher is good.” The teacher cordially gave a gift to the students; and Ye looked at the classmates and began the teaching activities. “Is the element most widely distributed in nature?” The teacher asked all students this question. Almost all students used the same voice to say the answer “oxygen.” After confirming that the students answered correctly, the teacher said: “What we are talking about today is oxygen.” At this time, the topic of “Chapter III Oxygen and Air” was written on the blackboard.