Around 15,000 officials gathered in Copenhagen, trying to map out an effective strategy the battle against climate change．
A. to win
B. will win
C. winning
D. won
网友回答
(答案→)A. to win
B. will win
C. winning
D. won
解析：考查非谓语动词。句意“大约15000官员聚在哥本哈根，努力制定一个有效的应对气候变暖的策略。”不定式表示将来，作后置定语，修饰strategy。故选A。