Language
If there is a 10 CM ruler and someone ask you how long is that. The answer should be 10CM. If there is a 5 CM ruler and someone ask you how long is that. The answer should be 5CM. Now, If there isn't any ruler and someone ask you how long is that. I should answer 0 or "N/A"? In this case, does 0 and "N/A" have the same meaning?
Accepted:April 29, 2010
Accepted:
April 29, 2010