BLondon - Policearemonitoringsocialnetworkingsites popular with teenagers such as Bebo, Fa

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London - Police are monitoring social networking sites popular with teenagers such as Bebo, Facebook and MySpace after claims that they are being used to organize mass brawls (对骂).
Kent Police believe that teenagers have been using the Internet to arrange “fight club” contests watched by up to 100 spectators in a public park.
At least six organized fights have taken place in Brenchley Gardens in Maidstone, Kent, according to one teenage blogger. (59) During one of the fights a 14-year-old boy was arrested for carrying a hunting knife. Kent Police have now ordered specialist officers to monitor sites such as Bebo.
Chief Inspector Ian Hall said: “(60) We are aware of attempts to organize fights using technology such as websites and mobile phones. Pupils from some schools in the  area  may  be  involved  in  this  type of anti-social behavior and we are working with schools to eradicate (根除) the problem.”
According to one blogger the fights usually take place on Saturday nights. The contests are named after the Hollywood film Fight Club starring Edward Norton and Brad Pitt. The central characters fight for the adrenaline rush but the film has an ironic twist (歪曲) apparently lost on some of its audience.
This week police in Macclesfield, Cheshire, arrested six teenagers on suspicion of public order offences after an investigation into a series  of assaults (袭击). The  youths, aged  16  and  17, were released on police bail (保释). The  officers  discovered that attacks had been discussed and possibly even prearranged using the Bebo websites.
In Collumpton, Devon, last  weekend  police  intercepted (阻止) 30  pupils  going  to  a mass brawl carrying metal bars, pieces of wood and chain.
Questions 56—58： Answer the following questions briefly.
56. What is the main idea of the passage?
57. What does the underlined word “monitoring” mean?
58. Please find a sentence in the passage which can replace the following one.
It is likely that the teenagers had used the Bebo websites to discuss and even plan the attack.
Questions 59—60: Translate the underlined sentences in the passage into Chinese. 56. Youths are using websites to set up mass brawls.