Temperature records have （）the existence of global warming.

Temperature records have （）the existence of global warming.
A、confirmed
B、declared
C、discussed
D、announced
【正确答案】：A
【题目解析】：本题考查动词辨析。confirm v. 证实。declare v. 宣布。discuss v. 讨论。 announce v. 宣告，通知。句子的主语是“Temperature records”，而BCD选项的主语都应该是人，所以A选项最符合题意。句意：气温记录证实了全球变暖的存在。