题目内容：
阅读下面短文，掌握其大意，然后从21～40各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题纸上将该选项标号涂黑。Thetriptocitywaseye-openingforeveryone,andnearitsend,alltheyoungpeopleinourfroupbegantoreflectonwhatithadmeant.We__21___thefirstnightwehadarrived.Wehadallgoneintothemarketsofthecity___22__theyoungpeoplecouldexperienceitsenergy.Butwhatweformoney…Walkinghome,___23____underalowbridge,wecameacross___25___familiesofhomelesspeopleseekingabitofdrygroundtosleepon__26__thenight.Wehadtostepoverbodiesaswefoundourwaythrounghthedarkness.
Thepoverty(贫困)was__27__thananythingmyyoungcompanionshadeverimagined.Backinthehotel,anairofsadnesssettledovertheproup.Many__28__andcried.Spendingtimeinthis___29__movesapersontocareabouthumanity.
Thatevening,ourfroupspenthourstalkingaboutwhatwehad___30___.Gently,Iencouragedeveryonetotalkaboutthedifficult___31__thatday’sdiscoverieshadinspired.Sittingtogether___32__acircleaseveryonehadachancetospeak,weallbegantorealizethat__33___ofuswasaloneinourstruggletocopewithourreactions.
Basedonmy__34__inpocerty-strickenareas,Isuggestedthat__35__theemotionswehadwerepainful,theycouldalsobeimportantinhelpingustomoveforward.Weall__36__thatwehadseenthingsthatshouldneverbeallowedtohappen.___37___,whatcouldwedoaboutit?Together,webegantobrainstormwayswecouldhelptocasethe__38__wehadseen.AsIencouragedgroupmemberstofocuson__39__theycoulddo,asenseofdetermination40t
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