今天上午。我们班里洋溢着紧张而又凝重的气氛。因为我们班里要举行一场关于“开卷是否有益”的辩论对抗赛。对抗赛还没开始,同学们都在进行热烈的讨论。过了一会儿,李老师来了,我们紧张的气氛更加重了。李老师站在讲台上,拿出一枚硬币说:“我们来掷硬币,正面是正方,反面是反方。”老师说 This morning. There was a tense and dignified atmosphere in our class. Because in our class we have to hold a debate contest about whether the “open book is good” debate. The match has not started, the students are in a lively discussion. After a while, Teacher Li came and our nervous atmosphere was even heavier. Standing on the podium, Teacher Li said: “Let’s flip the coin, the front is the square and the opposite is the opposite.” The teacher said