✔ 最佳答案
If any country can, it's China. I have to tell you, the police presence here in Beijing is overwhelming, and as it has gotten closer to the games it appears to be getting even stronger. There are a few lapses in their security, just due to the ways that they do things in China. (it's hard to explain, but there is just a Chinese way of doing things that is sometimes really odd). But, The government also has roadblocks on all the streets leading into Beijing, and is strictly controlling who gets in. I went to Tiananmen last Saturday to watch some fireworks they were setting off and the amount of police and army personnel they have there is staggering.
But on top of the police, there is also the ordinary citizenry. Down to the people living in run down hutongs, every Chinese I have met is extremely proud of the games and wants to do what they can do to help make sure they go smoothly. They always pay attention to what people are doing, especially foreigners, but this year they seem to be exceptionally diligent. So you even have to count the regular people as part of the security apparatus.
I think there could be more attacks in other areas, but it will be to hard for there to be attacks in Beijing, although we could see some protests. Protests are more likely to be a problem in Beijing than attacks.
參考: Just watching the developments here for the past couple of months.