We young people shouldn’t        think about the failure in the past. Instead, we should be        to face the future.

A．usually; enough brave

B．seldom; enough brave

C．sometimes; brave enough

D．always; brave enough

项目决策期，技术策划不包括( )。

A．技术方案分析和论证

B．技术方案的深化分析和论证

C．关键技术分析和论证

D．技术标准、规范的应用和制定

E．关键技术的深化分析和论证