小徐 zencart
galaxy s6 (2023-12-24 17:05:06)
这套书非常好，难易程度循序渐进，覆盖面很广，小孩子也很喜欢，讲解很生动，配有视频，这点很好，有些题目还是有点难度的，需要好好动点脑筋，比一般小孩子的读物难度要高一些。遇到有活动，就提前囤货了，反正以后也要买的。
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