7. C)。根据倒数第二段第二句可知，Ms. Knutson目前将大部分时间用于为客户转录网络视频和音频。
8. apply for financial aid。参见第五段最后一句“Associated Content pays contributors to write articles on a wide range of subjects, from organic flower gardening to how to apply for financial aid.”可知，Associated Content网站向人们征集稿件，稿件涉及的范围很广，从建造生态花园到申请经济援助。
9. community reviews。参见第七段“LivePerson says it vets contributors’ qualifications, such as medical licenses or financial certification, through a third party, and relies heavily on its community reviews.”可知，LivePerson对这些在网上用知识和技术赚钱的人会进行审核，例如行医许可或经济师证书等，通过以社区论坛为主的第三方进行认证。
10. 100 different countries。参见第十四段“Amazon says that MTurk now has 200,000 workers from 100 different countries ...”可知，MTurk现在有来自100个国家的20万名“网络员工”。
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