用单词的适当形式填空。

1. The _____ (第29届) Olympic Games were held in Beijing on August 8th, 2008.

2. We are having a school trip this Sunday. We feel ______ (exciting).

3. It rained ______ (heavy), so he didn't go to work yesterday.

4. Tom ______ (beg) his mother for another 10 yuan yesterday.

5.  His bag is blue. ______ (I)  is red.

已知建设年产50万t甲气体装置的投资额为50000万元，现有一年产80万t同类装置，工程条件与上述装置类似，生产能力指数为0.5，价格调整系数为1.1，试估算该装置的投资额为（）万元。

A．14907.61

B．41924.90

C．43481.32

D．69570.10