#08年职称英语考试模拟综合完型填空真题二1 搜索结果
OneGoodReasontoLetSmallpoxLiveIt’snowaffairbetthatwewillneverseethetotalextinctionofthesmallpoxvirus.Theideawastocapthegloriousachievementof1980,whensmallpoxwaseradicatedinthewild,bydestroyingthekille