以省(区、市)为单位,每年疑似预防接种异常反应个案调查表在调查后3日内报告率监测指标要求要达到()
A、≥80%
B、≥90%
C、≥95%
D、100%
参考答案:B
He ______ chess well. But since he graduated from university, he almost has had no time to touch it.
A.played
B.plays
C.has played
D.had played
土地统计的对象及主要任务?