问题
选择题
-- Have you been to the Great Wall?
-- Perhaps not in my memory. _______, it might have been during my early childhood.
A．If any
B．If ever
C．If once
D．If not
答案
答案：B
题目分析: 句意：——你去过长城吗？——在我记忆中或许没有去过，如果去过的话，很可能也是我很小的时候。A如果有的话；B如果曾经（发生过）；C一旦，一经；D如果不的话。根据句意可知此处指如果曾经去过，答案选B。