在一位老师的鼓励下，我做起了数学辅导。
With the encouragement of one of my teachers, I also did some tutoring in math.
他接受数学辅导，准备参加只有数学最优秀的学生才能参加的竞赛。
He was coached in mathematics in preparation for a competition in which only the best math student competed.
各地中小学奥林匹克数学辅导中出现了一定的问题，对于这些问题要设法纠正。
At the same time, some Mathematical Olympiad training for elementary and middle school students also has certain problems.
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