单选题 She crossed the enemy lines, disguised as a civilian, to bring medical ______ to the Resistance fighters.
【正确答案】 D
【答案解析】[解析] succour是succor的变体，“救济，援助”的意思，符合题意。surrey(四轮双座通常有篷的)萨里式游览马车；surcharge追加罚款，额外费；summation总和，和，合计。