T细胞不能
A.产生细胞因子
B.直接杀伤靶细胞
C.参与对病毒的免疫应答
D.介导ADCC效应
E.诱导抗体的类别转换
参考答案:D
— Your shoes look so cool. Where ________ your shoes ________?
— Shanghai.
A.is, made of
B.were, made from
C.was, made in
D.are, made in
社区卫生宣传活动可通过
A.口腔健康咨询B.口腔健康检查C.问卷调查D.制订口腔保健计划E.口腔疾病治疗