丁零零——上课了。贾老师按时走进教室,同学们齐刷刷地盯着老师看,期待贾老师带来新鲜有趣的内容。贾老师:同学们,你们关注过身边的桥吗?它们是架设在水面或者空中,以便行人、车辆等通行的建筑物。千百年来,桥梁为推动人类社会的发展立下了大功劳。时代在发展,桥也在发展。同学们能想到未来的桥是什么样子的吗?阿毛:为了解决交通问题,人们建造了许许多多的桥。我想,未来的桥一定可以修得很长很长。比如,我想去南美 Ding zero - the class has. Jia into the classroom on time, students staring at the teacher uniform look, looking forward to Jia teacher brings fresh and interesting content. Jia: Teacher, have you ever paid attention to the bridges around them? They are erected on the water or in the air for the passage of pedestrians, vehicles and other buildings. For thousands of years, the bridge has made great contribution to promoting the development of human society. Times are developing and bridges are developing. Students can think of the future of the bridge is like it? Ah Mao: In order to solve traffic problems, people built many bridges. I think the bridge in the future will surely be long and long term. For example, I want to go to South America