单选题 When he lived in that remote place, radio was the only means he had to keep ______ of current events in the country.

【正确答案】 D

【答案解析】[解析] 各项的意思为：account计算，账目，keep accounts记账；trace痕迹，遗迹，踪迹；record履历，档案；keep record of记录，记载；track轨迹，车辙；keep track of跟上……的进展，保持与……的联系。答案是D。