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] that [B] which [C] what

As we (49) history，we learn many interesting (50) ．History helps US understand our present life better．

利润表的目的是反映（）。

A.资产、负债和所有者权益的关系

B.公司在某一期间的收入、费用和利润（或亏损），以及利润（或亏损）的分配

C.公司的收入、费用和利润（或亏损），以及利润（或亏损）在某一时点的分配

D.企业费用和利润（或亏损）的汇总