[单选题]我国古代选拔官员的制度几经变革，不断完善。下列选官制度按时间的先后顺序排列正确的是( )。
A.世官制察举制九品中正制科举制
B.察举制世官制九品中正制科举制
C.察举制世官制举孝廉九品中正制
D.世官制察举制科举制九品中正制

{{B}}Memo{{/B}}
To: All Division Employees
From: Thomas Sun
Date: October 12, 2006
Subject: A meeting on workshop format
As you know, six times a year the company conducts an orientation workshop for new employees. The purpose of these workshops is to acquaint new employees with the company: its organization, its executive personnel, its products, its objective, and its future.
A meeting is scheduled for October 19 this year. I hope each of you will come prepared to suggest ways in which our division can be more interesting and productive. Please be prepared to suggest a new format for the workshops, including the arrangement of slide presentations.
To: All Division Employees
From: Thomas Sun
Date: October 12, 2006
Subject: A meeting on{{U}} (46) {{/U}}
Purpose:. to acquaint new employees with the company’s organization, {{U}} (47) {{/U}}, products, obj