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学生解答应用题的时候,如果应用题的条件、问题或叙述方式稍有变化,学生便一筹莫展。设计一题多变的练习,可以提高学生的解题能力。例如:
Students answer the questions, if the conditions of the questions, or minor changes in the way the narrative, students will do nothing. Design a changeable exercise, can improve students' ability to solve problems. E.g: