单选题
Over the last year employment has grown at the fastest pace since 2006 the pace of hiring seems to be trending upward.
【正确答案】
C
【答案解析】解析：分析题干可知，“the pace of hiring seems to be trending upward”是一个完整的句子，两个句子间没有连词连接，属于流水句。此部分应为定语从句，修饰时间状语2006，为使句子完整通顺，可在2006后面加上定语从句的引导词when。即本题应选C项。