单选题 He was a member of the Hillary ______ that conquered Mount Everest.
A. mission B. invasion C. experiment D. expedition

【正确答案】 D
【答案解析】[解析] 本题空格处是说征服珠穆朗玛峰的登山探险队。D项“expedition远征，探险队”符合题意。其他三项“mission使命，代表团；invasion入侵；experiment实验”都不正确。