bǎ / zhè / zhǒng / méi / yǒu / gēn / jù / de / shuō / fǎ / dàng / chéng / shì / shí / zhēn / shi / qí / tán

把这种没有根据的说法当成事实，真是奇谈。

Treating such an unfounded claim as fact is truly ridiculous.