参考答案

正确答案：D
解析：根据题干关键词many Americans，go abroad，holiday定位到原文第二段第二句：...they go not only to see new sights but also—in those places where they do not feel too strange—with the hope of meeting new people．即美国人到国外度假的目的是观光和结识新朋友。故选D项。