[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

判断课程体系科学性看是否对标CEFR或蓝思(Lexile)分级,并配有明确的Level划分与晋级测试;仅靠单词卡片堆砌、无难度梯度的APP不构成体系化学习

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