十七大以来,社会、建设取得新进步,全民医保基本实现,()制度初步建立。
参考答案:城乡基本医疗卫生
On May 22, a Han taxi driver an old lady to the hospital as soon as he could in Xinjiang.
A.sent
B.sends
C.is sending
D.has sent
下面属于非概率抽样的是()。
A.随意抽样
B.简单随机抽样
C.配额抽样
D.分层抽样
E.滚雪球抽样