【Therearemanyplacestogoonsafari（观赏野生动物）inAfrica，butridingahorsethroughthefloodedwatersofBotswana'sOkavangoDeltamustrankasoneoftheworld'smostexcitingwildlifejourneys．Severalsafaricampsoperateasthe】
Therearemanyplacestogoonsafari（观赏野生动物）inAfrica，butridingahorsethroughthefloodedwatersofBotswana'sOkavangoDeltamustrankasoneoftheworld'smostexcitingwildlifejourneys．
Severalsafaricampsoperateasthebaseforthisadventure，providinguniqueridestwiceadaytoexploredeepintothedelta．Thecampshaveexcellenthorses，professionalguidesandlotsofsupportworkers．Theyhaveareputationforprovidingagreatridingexperience．
Themorningride，whentheguidestakeyoutobeautiful，shallowlakesfullofwaterlilies，tendstobemoreactive．Itisunlikeanyotherridingexperience．Withrainbowsforminginthesplashingwateraroundyouandthesoundofhugedropsofwaterbouncingoffyourbodyandface．Itistrulyexciting．Youareverylikelytocomeacrosslargewildanimals，too．Onhorsebackitispossibletogetquiteclosetoelephants，giraffesandmanyotheranimals．Thesenseofexcitementandtensionlevelsrisesuddenlythough，asdoesyourheartrate，asyoumoveclosertothem．
Intheevening，ridesareusuallyatamorerelaxedandunhurriedpace．Withgoldenlightstreamingacrossthegrassydeltaandtheanimalscomingouttoeatanddrink．Sedatethoughtheyare，ridesatthistimeofdayarestillveryimpressive．Asthesun'srayspassthroughthedustkickedupbythehorses，theromanceofAfricacomestolife．
Backatthecampyoucankickoffyourbootsandenjoyexcellentfoodandwine．Lookingbackonyourday，youwillfindithardtodenythatahorsebackSafariisascloseasyouwillevercometoansweringthecallofthewild．
48．Whatdoestheunderlinedword“They“referto？___
A．Floodedwaters
B．Wildlifejourney
C．Safaricamps
D．Uniquerides
49．Whatdoestheauthorfindmostexcitingaboutahorsesafari？___
A．SeeingandfeelingtherealAfricanlife．
B．Enjoyinggoodfoodandwineatthecamp．
C．Huntinglargeanimalsjustasourancestorsdid．
D．Beingpartofthesceneandgettingclosetoanimals．
50．Whatdoestheunderlinedword“sedate“probablymean？___
A．Wildandromantic
B．Slowandpeaceful
C．Hurryandthirsty
D．Activeandexcited
51．Theauthorintr