“10月22日上午第2节课,居思成的水杯翻了。”我在日记本上这样写道。“10月22日上午饭前,曾娜的饭盒翻了。”“10月22日中午饭时,陆欣瑜的汤翻了。”吃过午饭,我又在本子上这样写道。究竟是怎么一回事?原来那天,在上数学课时,老师正在布置作业,老师以为是同学们因为功课多而齐声叹气。谁知是因为在0.0000001秒之前,居思成的水杯盖子“不知为何”自行脱落,水洒一地。数学课 “In the second class on the morning of October 22, Ju Si Cheng’s cup turned over.” I wrote in my diary. “Before the meal on October 22, Zeng Na’s lunch box turned over. ” “At lunch on October 22, Lu Xinyu’s soup turned over.” “After lunch, I wrote it in my notebook. What is the matter? The original day, in the math class, the teacher is homework, the teacher thought it was because students homework and more sigh in unison. Who knows because before 0.0000001 seconds, Ju Si Cheng cup lid ”I do not know why " fall off, water spilled. math class