“叮铃铃……”上课铃响了,校园一下子安静了下来。可我们六(1)班的教室里却异常热闹,原来,这节科学课进行“科学知识擂台赛”。我作为科学课代表,理所当然首先充当擂台赛的擂主,科学老师是裁判。比赛规定:所有的同学都有权向擂主提问,提问的范围是科 “Jingle bell ... ” class rang, the campus quiet at once. However, our six (1) class classrooms are exceptionally lively. It turns out that science lessons are conducted in this section of the Science Knowledge Contest. As a representative of science class, I took the lead in the ring as the headmaster and the science teacher was the referee. Competition rules: All the students have the right to ask the main question, the scope of the question is Division