In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

BEIJING, China (CNN) -- Fireworks, athletes and pageantry on a scale never before seen in the Olympics opened the Summer Games in Beijing on Friday as the Asian nation kicked off the biggest and most scrutinized Games in history. Fans celebrate the Opening Ceremony of the 2008 Olympic Games in Beijing, China, on Friday. Chinese President Hu Jintao declared the Olympics officially open, retired Chinese gymnastics champion Li Ning was carried through the air to light the Olympic cauldron, and pyrotechnics exploded throughout Beijing as the crowd of 91,000 at National Stadium cheered wildly. It was a stunning display from the nation of 1.3 billion people. Some media observers believe that the Opening Ceremony may be the most-watched television event in history.Olympics Opening is under way, marking beginning of Summer Games2008 summer Olympics is most expensive on recordAnticipation building grows who will light Olympic cauldronMore than 10,000 athletes to compete for about 300 gold medals 
 Question:But the loudest roars were saved for the _ participants.
China