第6题: [单项选择]He was ordered away upon a long ______ to the ice-covered south, to make war upon the natives there and rob them of their furs. A. excursion B. expedition C. tour D. voyage 参考答案:B 答案解析:题意为:他受命到冰雪覆盖的南方进行长途探险之旅,与当地的土著交战,并且掠夺他们的裘皮。此题考查名词近义词辨析。expedition意思是“远征”,暗指为特定目标而进行的团体旅行或考察,还可以指探险队。