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上完《两个铁球同时落地》一课后，我给学生布置了一个试验———开动脑筋，展开想象的翅膀，看谁能将一个鸡蛋从最高层的楼上扔下而鸡蛋不破。9岁的女儿在我班上，一回家她便迫不及待地找来鸡蛋，做起试验来。由于要做饭，我没有时间在一旁指点。看着平时毛手毛脚的女儿，我告
After finishing the lesson “Let the two iron balls land at the same time,” I placed a test for the students to use their brains and unfold their imagined wings to see who could drop an egg from the uppermost floor upstairs without breaking the egg. The 9-year-old daughter was in my class and when she got home she couldn’t wait to get an egg and start a test. Due to cooking, I have no time to point aside. Watching the usual hairy daughter, I tell you