As the most acute one in _______ history of all epidemics, the Spanish Flu had ______ tendency to strike the young and fit rather than the old.
A.不填；the
B.不填; a
C.the; 不填
D.the; a
网友回答
D解析考察冠词。第一空用the特指all epidemics的历史；第二空是固定词组have a tendency to do sth有做某事的倾向。故D正确.