问题
单项选择题
Many students do not like tostudy history(历史)．They say that there are (41) many names and dates to (42) ．But if we do not know about the (43) ，we can not understand the present well．For example，if we wish to know how men (44) to use fire，we have to know what men did (45) the past to travel at night or to keep themselves (46) in cold nights．Only a study of history will make US realize(意识到) (47) everything we do today is the result of what (48) people did in the past．
[A] at [B] for [C] in
As we (49) history，we learn many interesting (50) ．History helps US understand our present life better．
答案
参考答案：C
解析：[精析] 本题考查固定短语。因上文中提到“did”，可知是指人类过去的动作，短语in the past表示过去，故C正确。