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].

[Q]: Trains crossing snowfields, winding through meadows, passing by mountains, by day and night, through winter and summer. These stunning images are the work of one photographer in his quest to capture the incredible beauty of China's railway lines. Wang Wei, 25, has travelled more than 185,000 miles over the past 10 years and taken more than 300,000 photographs across the country, reported the People's Daily Online. Now, some of the photographs will feature in a new book called Running After Trains, to be published in July. The freelance photographer tells MailOnline his new book will focus on the photography techniques for shooting trains, and he hopes his photos can show the beauty of Chinese railways to more people.Wang Wei, 25, has travelled more than 185,000 miles over past 10 years and taken more than 300,000 photographsHis obsession with trains began aged 11 when he stole his parents' camera and went down to the railway trackHe spends five months travelling every year, and has been everywhere from Gobi desert to the Russian borderSome of the photographs will feature in Wang's new book Running After Trains, due to be published in JulyChina's vast railway network is 75,000 miles long - the second largest in the world behind the United States 
 Question:'The authorities don't promote _ trains and railways often enough, but they are so beautiful and they belong to every one in China,' says Wang.
[A]: China


[Q]: We've all been frustrated in the airport when a gloating social network update about an impending luxury getaway is cut short by the Wi-Fi cutting out. And businessmen conducting that last-minute conference call throw their arms in the air when mid-conversation, connectivity is lost. However, these may not be common occurrences in Suvarnabhumi Airport in Thailand - as it has the fastest airport Wi-Fi in the world. And a new infographic shows its nearest competitors. Blog website rottenwifi.com tested out speeds at airports around the world, and it was in the Far East where the fastest was discovered recording an impressive 41.45 megabits per second (Mbps).Suvarnabhumi Airport in Thailand has fastest Wi-Fi in the worldDublin Airport comes in third - but no English representatives make the listStudy found fliers only have 'some' chance of Wi-Fi on 24% of flights 
 Question:This compares to Routehappy's last report, in June 2013, which found _-Fi connectivity on less than half of domestic flights.
[A]: Wi


[Q]: (CNN) -- The task facing Agnieszka Radwanska in her first Grand Slam final is a daunting one, because in the opposite corner is Serena Williams, who'll be gunning for a 14th major singles titles. Radwanska, the No. 3 seed from Poland, defeated Angelique Kerber 6-3 6-4 on Centre Court to book her place in a showpiece final for the first time in her fledgling career. And her opponent will be 30-year-old Williams, who also recorded a straight sets win, disposing of the No. 2 seed Victoria Azarenka 6-3 7-6. Williams has won four singles crowns at the All England Club, the last of them coming in 2010, and powered past Azarenka, from Belarus, firing down 24 aces and 45 winners.Serena Williams will face Agnieszka Radwanska in the Wimbledon singles finalWilliams beats No. 2 seed Victoria Azarenka from Belarus 6-3 7-6 to book her placeRadwanska reaches first ever Grand Slam final by beating Angelique KerberPolish No. 3 seed triumphs 6-3 6-4 and now faces four-time Wimbledon champion 
 Question:Williams' performance against _ was made all the more impressive by the fact that she played two doubles matches with sister Serena on Wednesday.
[A]:
Victoria Azarenka