学而思成语卡片（小学必备1500词）

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• intros：{"brand_intro":"学而思是好未来教育科技集团旗下知名中小学教育品牌，深耕K12领域十余年，拥有强大的教研团队与大数据支持。其产品线覆盖教辅、智能硬件、学习卡片等，以\"科学分层，精准提分\"著称。成语卡片系列由一线名师与认知心理学专家联合研发，注重记忆效率与应试衔接，在家长群体中信任度极高。","product_intro":"本套卡片收录小学阶段1500个高频成语，按年级与难度分为三级（基础/进阶/冲刺）。每张卡片正面为成语、拼音、释义及例句，背面为近反义词、常考搭配及真题出处。采用\"艾宾浩斯遗忘曲线\"编排复习序号，附赠错题本与APP扫码听音频功能。卡片为活页环装，可自由拆卸组合，适合系统备考与日常积累。","key_specs":{"适用对象":"6-12岁小学生（1-6年级）","卡片数量":"1500张/套","尺寸":"6.5cm×9cm","材质":"铜版纸覆膜，活页环装","内容语言":"中文（拼音+真题标注）","附加功能":"APP音频、错题本、复习序号"}}
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