W.H.O.reportedtheinfluenzabecause______.
A.thedoctorbelongedtothatorganization
B.manypeopleinHongKongalsosufferedfromit
C.thedoctorfounditsvirusandsentthesamplestothem
D.itspreadwidelyinSingaporeforthefirsttime
正确答案：B答案为B。根据第二段最后两句看，W.H.O.publishedtheimportantnewsalongsidereportsofasimilaroutbreakinHongKong，whereabout15-20%ofthepopulationhadbecomeill作出该项选择。选项A和D在文中未提到；选项C文中未提他向W.H.O.提交样本。
