----HaveyoubeentotheSummerPalace?----Perhapsnotinmymemory._______,itmi

----Have you been to the Summer Palace? ----Perhaps not in my memory._______, it might have been during my early childhoodA.If anyB.If everC.If onlyD.If not

B解析试题分析：考查交际用语。A项If any如果有的话（否定句或疑问句）； B项中 If ever 如果有的话； C项中If only 但愿，要是······就好了； D项中 If not如果不。句意：－你去过颐和园吗？-或许在我的记忆中没有。如果有话，可能已在我的童年的记忆里。考点：考查交际用语。点评：交际用语的考查要注意上下文语境。要在具体语境中去理解。本句要注意后面的提示it might have been during my early childhood，这是解题关键。

就是这个解释