我踏着铃声走上讲台,防空警报响了。刺耳的防空警报声尖锐、凄厉,在空气中久久回旋,所有车船也一起鸣响了喇叭、汽笛……6月5日上午10点30分,山城上空已连续20年在此时拉响防空警报。为了避免不必要的恐慌,学校领导在广播里已提前告知学生,因此,孩子们眼里没有恐慌,但我却看到了茫然和讶异。“老师,为什么要拉警报啊?”一只小手高高举起,在征得老师的同意后,一个 I walked onto the rostrum ring, air defense alarm rang. The piercing air defense alert was sharp and crisp and long circled in the air. All the vehicles and ships also sounded their trumpets and sirens ... At 10:30 on the morning of June 5, the air defense alarm was sounded at that time for 20 consecutive years over the mountain town . To avoid unnecessary panic, the school leaders told the students in advance on the radio that there was no panic in the eyes of the children, but I was dazed and surprised. “Teacher, why pull the alarm ah?” A small hand raised high, with the consent of the teacher, a