![Pay-for-knowledgeplatformsandapps,includingWeiboandZhih...]( "Pay-for-knowledgeplatformsandapps,includingWeiboandZhih...")
- 问题详情：Pay-for-knowledgeplatformsandapps,includingWeiboandZhihu,①__________allowpeopletopaymoneytohavetheirquestionsansweredbyprofessionalsorseeonlineanswersprovidedtoothers,②__________(be)becomingpopularinChinanow.WangSicong,thesonofChinesebillio...
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