#2015职称英语考试《卫生类》阅读判断模拟题 搜索结果
Ifyou'reworriedaboutthepossibilityofaingbirdfluepidemic,youcantakefortinthefactthathumanityhassurvivedasimilarinfluenzaepidemicinthepast.StartingitsroundsattheendofWorldWarI,the1918flukilledanestimated50
