题目内容：
根据以下材料，回答题Questions51-55refertothefollowingjobadvertisement.
| JobListin914523-PostedMayl： |
| TheWorldHealthCoalition(WHC)seeksahighlyqualifiedindividualforimmediateemploymentontheHS．1VaccinationProgram．Thejobprovidestheopportunitytocollaboratewithsomeoftheleadingresearchersinvaccineproduction．ThisWHCfacilityislocatedinLondon．PositionavailablefromMay27．Duties：Individualisresponsibleforcompilingandstoringresearchresultsandwillassistincreatingdiseasepreventionworkshops．Requirements：Applicantsmusthaveadegreeinstatisticsandatleastfouryearsexperienceworkinginaresearchfacility．KnowledgeofPZBsoftwareisamust，asisateam—orientedapproachtoworkin9．FluencvinEnglishisrequired；abilitiesinadditionallanguagespreferred．Sendresumealongwithcoverlettertoiobsowhc．org．uk．Includeane—mailaddressandtelephonenumber．DeadlineisMayl0．ApplicantswillbenotifiedoftheirstatusbvMayl7．ApplicantschosenforinterviewswillberesponsiblefortheirowntransportationtoLondon． |
| ApplyNow |
| JobListin914524一WhirlwindsCruiseShips—PostedMay2： |
| Didyouknowthatyoucangetpaidtotravelallovertheworld?WithweeklvdeparturestoAfricaandtheMediterranean，Londonisthecruise—shiphubofEurope!Whetheryou’vegottenyearsexperienceintheserviceindustryorarenewtotheinternationaltravelindustry，cruiseshipspresentexcellentopportunitiesforbothskilledandunskilledlaborers．Allyouneedisawillingnesstoworkwithothers．Withanaverageofover2500passengersonboardatalltimes，almosteveryoccupationthatyoucanimagineisavailable．Youcouldbeagiftshopmanager．fitness／poolinstructor，restaurantwaiter，ordaycareworker；visitourWebsiteatwww．whidwindscruise．com．uktoreadaboutadditionalskilledpositions．Thisisagreatwaytopayoffuniversitydebtsorjustsaveupforanewadventure，becauseratesayecompetitive，contractsareavailableonamonthlybasis，androomandboardareprovidedfreebythecruiseline．AllcontractsayepaidinBritishpounds．Urgentvacanciesarewaitingtobefilled．SOcontactyourLondonWhirlwindsofficetodayCUCKHERETOAPPl |
WhatisthelastdaytoapplyfortheWHCposition? A．May1
B．May10
C．May17
D．May27
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答案解析：