下列哪项不是初级卫生保健的基本内容（）
A.促进健康
B.预防保健
C.合理治疗
D.执行卫生政策
E.社区康复
参考答案：D
Mr. Richard was disappointed that many students who had signed up for his adventure course _______ at the last moment.
A．left out
B．got out
C．passed out
D．dropped out
A．一头小牛
B．一块砖
C．八年级物理课本
D．两枚1元硬币
