单选题
Another reason a company might not have a human resources department is that they choose to outsource it to a company that provides HR services.
【正确答案】
A
【答案解析】本题是主系表结构,是包含多种从句的复合句。a company…human resources department是定语从句,先行词是reason。当reason作先行词时,定语从句的关系词可以是why或that或省略。系动词is后是表语从句,表语从句中包含先行词为company,that引导的定语从句that provides HR services。另外,outsource一词较为陌生,译为“外包”。