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】 固定搭配和上下文语义。keep track of意为“跟上……的进展，保持与……的联系”，为固定搭配；keep record of意为“记录，记载”，不符合句意。故答案为D。本句句意：住在那个偏远的地方时，收听广播是他了解国内时事的唯一途径。