【单选题】【消耗次数：1】
根据《中国互联网学习白皮书》，学习者用户每周开展互联网学习的频次最多集中于（）。
①
1-10次
②
11-30次
③
31-100次
④
100次以上
参考答案：
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' + n.menu_name + '
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