小明接种了乙肝疫苗，对乙肝病毒具备了免疫力，这种免疫属于（ ）

    This is a photo of my family . I'm John . I'm ten . My sister is seven . We are in the same school .My grandparents are Americans . My father is 42 .He is a driver . My mother is 40 . She is a teacher . We are very happy .