—Ye Shiwen got the championship in the women's 400 meter individual medley at London Olympics.

—She fully deserves the title. She ________ for it for years.

A．is preparing

B．was preparing

C．has prepared

D．had been preparing

软件开发项目管理人员所需要的软件开发工具主要是______

A．计划工具
B．分析工具
C．设计工具
D．编程工具