问题
选择题
In _______ gesture to help preserve history, the locals are repairing _______ large percentage of the historic sites steadily.
A．the; the
B．a; a
C．the; a
D．/; the
答案
答案：B
考查固定短语和冠词。句意“为了保护历史，当地居民正在修复一大批历史古迹。”in a gesture to do sth.“为了做某事”，是固定搭配；排除A、C；泛指一大批用a large percentage of...。故选B。