第四段的答案是C段的最后一句话，outsourcing personnel have to talk to the home company's executives and users to understand their experiences.这里的talk to对应address，向....谈话。第四题的意思是“说明在远址工作的外购人员的事情”，也就是C段最后一句说的外购人员向公司汇报他们的经历。

　　第五段的答案在B段，相当明显：It is critical to have an individual in charge to check that the external and internal business operations work together。需要派专人负责integration。

　　第六题说“外派人员要熟悉自身工作的不同细节”，对应C段的“create a team where there is a clear understanding of objectives and incentives.”打造一个对目标和动机都有清晰理解的团队。

　　第七题稍微绕一点。题目里的“an alternative to outsourcing”指的是D段里的“create a joint-venture company with the outsourcer”，建立一个联合企业。D段里的专家一直在强调联合企业的麻烦和复杂性(joint ventures bring potential troubles)，所以是正确答案。