【单选题】

People often wonder why historians go to so much trouble to preserve millions of books, documents and records of the past. Why do we have libraries What (1) are these documents and the (2) books Why do we (3) and save the actions of men, the negotiations of statesmen and the (4) of armies

Because, sometimes, the voice of experience can (5) us to stop, look and listen.And because, sometimes, past records, (6) interpreted, can give us (7) of what to do and what not to do.
If we are to create (8) peace forever, we must seek (9) origins in human experience and in the record of human (10) . From the story of the endurance, courage and (11) of men and women, we create the inspiration of youth. From stories of theChristian men, right down toBudapest’s heroic men of today, history records the suffering, the self-denial, the loyalty and the heroic (12) of men. Surely from these records there can come help to mankind in our (13) and perplexities, and in our yearnings (14) peace.
The (15) purpose of history is a better worlD、History gives a warning to those who would (16) war. History (17) inspiration to those who seek peace. (18) , history helps us learn. Yesterday’s records can keep us from (19) yesterday’s mistakes.And from the pieces of mosaic assembled by historians come tile great printings (20) represent the progress of mankinD、
A．campaigns
B．activities
C．movements
D．journeys