题目内容：
根据以下材料，回答题 TalesoftheTerriblePast
Itisnotthejoboffictionwriterstoanalyzeandinterprethistory．Yetbywritingaboutthepastinavividandcompellingmanner,storytellerscanbringearliererastolifeandforcereaderstoconsiderthemseriously．Amongthosetakingonthetaskofrecountinghistoryaresomeblackwriterswhoattempttoexamineslaveryfromdifferentpointsofview.
NobelPrize-winningauthorToniMorrisondealsspecificallywiththelegacyofslaveryinherbookBeloved．Themaincharacterinthisnovel,aformerslavecalledSethe,livesinOhiointheyearsfollowingtheCivilWar,butshecannotfreeherselffromherhorrificmemories．Throughaseriesofflashbacksandbitterreminiscences,thereaderlearnshowandwhySetheescapedfromtheplantationshehadlivedon,thefateofherhusband,whoalsotriedtoescape,andfinally,whathappenedtothechildcalledBeloved．Morrison'sscenesoftortureandmurderarevividand
stronglyconveythedesperationoftheslavesandthecrueltyoftheirowners.
CharlesJohnson'sMiddlePassageapproachesslaveryfromadifferent,yetnolessviolent,vantagepoint．Hismaincharacter,RutherfordCalhoun,isane'er-do-wellfreeblackAmericanwhostowsawayonaslaveshipboundforAfricatocollectits"cargo"．Puttoworkafterheisdiscovered,CalhounwitnessesfirsthandtheappallingconditionsinwhichthecapturedAfricansaretransported.
Whentheyfinallyrebelandtakeovertheship,hefindshimselfinthemiddle--andisforcedtocometotermswithwhoheisandwhathisvaluesare.
NeitherBelovednorMiddlePassageisaneasyread,butbothexemplifyAfricanAmericanwriters'attemptstobringsignificanthistoricalsituationsaliveformodernaudience.
Thispassageismostlyabout__________. A．thecausesofslaveryinAmerica
B．blackwritersinthelate20thcentury
C．whyMorrisonandJohnsonwrotethebookstheydid
D．twonovelsthatdealwithslavery
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答案解析：