Suppose you are a member of a volunteer organization As Beijing 2008 Olympic Games is drawing near, please write a letter to all volunteers to ask them to watch sports matches in a civilized manner. You should write approximately 100 words. Do not sign your own name at the end of the letter. Use "Wang Lin" instead. You do not need to write the address.

A．To tell the readers what computers will look like in the future.
B．To show the close relations between man and computers.
C．To tell the readers how important silicon microchips are.
D．To talk about the possible future uses of computers.