I would like to convey my heartfelt thanks to you for your kindness to receive me when I participated in an exchange program in USA.
Your generous help made it possible that I had a very pleasant stay and a chance to know American cultures better. Besides, I think it is an honor for me to make friends with you and I will cherish the goodwill you showed to me wherever I go. I do hope that you will visit China one day, so that I could have the opportunity to repay your kindness and refresh our friendship.
I feel obliged to thank you again.
In this chart, we can see the mobile phone subscriptions in developed countries have a steady and slight increase from 1990 to 2007 and then remain constant in 2008. Meanwhile the mobile phone subscriptions in developing countries have witnessed a slow increase from 1990 to 2004 and then a great surge from 2004 to 20007: the biggest surge happens from 2005 to 2006.
This chart reflects different developing modes of mobile phone industry in developed and developing countries. The developed countries have a limited number of populations, most of whom are well-educated. Therefore, the spreading of the mobile phone service is efficient and soon the market is saturated. Also at the beginning the developed countries have more people who can afford this service. The developing countries have a large population who keeps a large demand for mobile service. As the mobile phone service becomes cheaper and cheaper, the increasing customers subscribe to benefit from this service.
As discussed above, it is not surprising to see this change. In my opinion, this trend that the number of mobile-phone subscriptions is increasingly increasing will continue for a while in the future.