政策过程研究展开的突出标志是由主要关注政策制定转变为注重公共政策的执行与评估。
参考答案：对
My sister _____ as a secretary in her company for three years and now she _____ to the manager of the sales department.
A．served; has been promoted
B．had served; has been promoted
C．has served; has promoted
D．was serving; has promoted
29超声扫查可用的声像图基本断面是
A.纵断面（矢状断面）
B.横断面
C.冠状断面
D.斜断面
E.以上都正确
