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阶段考数学试卷发下来,各班的教室开始不平静起来了,不久,陆续有各班的学生拿着试卷一边争吵着一边来到办公室找老师,说改错了他们的题目．原来在这次初二级的数学考试中出了以下的一道题:
During the test of mathematics in the stage, the students curled up and the classrooms in each class didn’t start to calm. Soon afterwards, students in various classes were arguing while holding the examination papers. They came to the office to find teachers and said that they had mistaken their subjects. The original question in the first two math exams was as follows: