GRE Text Completion: JiJing 1373-GRE填空机经1373题 - 51864JN331NY743NA

Ancient generals, lacking modern technologies such as radio and satellite communication, often found that one of the most significant challenges in warfare was to be accurately ____________ the many changes on the battlefield or in the campaign. A. fortified by B. adulterated by C. cognizant of D. apprised of E. parodied by F. chary of