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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】On the heels of E1 , its opposite, La may soon arrive. In a Weekly Update, scientists at the NOAA Climate Prediction Center reported that as the 2006-2007 E1 faded, surface and subsurface ocean temper...
A.
frequency
B.
intensity
C.
duration
D.
route