建设工程项目的估算工作按投资决策过程的进展相应地分为三个阶段，即( )。

A．投资机会研究与项目建议书阶段的投资估算

B．市场研究与投资机会分析阶段的投资估算

C．决策立项阶段的投资估算

D．详细可行性研究阶段的投资估算

E．初步可行性研究阶段的投资估算

Directions:

The Students’ Union of English Department will hold an English speech contest. You are required to write a poster through which students and teachers can be informed of the event. The poster should include:

1) schedule of the contest,

2) and requirements and other details.

Write your letter in no less than 100 words. Write it neatly on ANSWER SHEET 2.