✔ 最佳答案
You should trust U.S. Government this time.
The last President was George Bush who always like to exaggerate and to show off his talent in terrorists removal. No news was heard at his 8-year service about catching or killing Osama bin laden.
And since Obama was elected and served as the President in early 2009, he does not work like George to chase terrorists so closely. He concerns more on economic development and develop friendship with Middle East countries.
The most important evidence comes from "al-Qaeda", the world No. 1 terrific organization responsible for 11-9-2001 attacks in U.S. It has just released in its official website confirming the recent death of their leader Osama. I am pretty sure this time Osama was just killed in Pakistan and Obama needs not doing such gamble at this time. If he wants, he could wait until May 2012 to release the news, just months before President election, right?
The following website has lots of hyperlinks and you can visit to obtain more updated information which cannot be seen in our local newspapers:
http://en.wikipedia.org/wiki/Osama_bin_Laden
Hope I can help you.
參考: Mathematics Teacher Mr. Ip