【答案解析】本题问Green对联合航空公司的看法。第四段“...there are fewer employees,...United has had its best on-time performance in the past two years and that internal gauges of customer satisfaction are up．”“What our employees are going through is not having an effect on our customer service...”说明在Green看来，人员的减少并未对客户服务工作造成干扰。故[D]“虽然人员减少但仍能提供良好的服务”正确。 [A]没有处在困难时期：第四段第二句“...the major carriers have shrunk significantly since 9/11．”第三句“... the airline also has far fewer flight”都说明民航业正处于一个比较困难的时期。 [B]面对着旅客提出的越来越高的要求：第四段第四句提到“...internal gauges of customer satisfaction are up.” (旅客满意的内部标准提高了)，这里指的是民航公司对旅客满意度评估的标准提高了，而不是说旅客提出更高要求。 [C]在9/11之后对手变少：第四段第二句“...the major carriers have shrunk significantly since 9/11”，说明整个民航业都受到影响而“缩水”，而不是对手减少。