论文部分内容阅读
很多小读者写信希望多讲些有难度的题目,我很喜欢大家这种勇于挑战的精神。我特意请来了奥数教练孙老师来给我们讲解精彩的奥数题,还是国外竞赛的试题呢!
Many young readers wish to write more difficult topics, and I really like everyone's courageous challenge. I specially invited Austrian coach Sun to explain to us the wonderful Mathematical Olympiad questions, or the questions of foreign competition too!