week 1:Boston Marathon 2013

Boston Marathon bombing of 2013

The marathon is traditionally held on Patriots’ Day, a public holiday in Massachusetts that commemorates the American Revolutionary War Battles of Lexington and Concord. The festive atmosphere draws hundreds of thousands of spectators to the 26-mile 385-yard (42,195-metre) route from Hopkinton,Massachusetts, to Boston’s Back Bay neighbourhood. More than 26,000 runners participated in the race in 2013, marking the 117th time that the world’s oldest annual marathon had been contested. About five hours into the race, the first bomb exploded less than half a block from the finish line, on the north side of Boylston Street. Roughly 12 seconds later a second bomb exploded some 600 feet (180 metres) from the first. It too was planted on the north side of Boylston Street amid a crowd of onlookers. First responders reacted immediately, and a medical tent that had been erected to treat runners was turned into an emergency medical facility. Three bombing victims died of their injuries, and more than 100 of the seriously injured were transferred to area hospitals as local police and federal investigators surveyed a crime scene that covered 15 square blocks.

In the days following the attacks, law-enforcement personnel solicited assistance from the public, asking for photographs or video footage that might prove relevant to their investigation. It was revealed that devices used in the attacks were household pressure cookers that had been packed with an explosive substance, nails, and ball bearings—the latter two elements acting as shrapnel when the bombs detonated. On April 18 the Federal Bureau of Investigation released images and video of two men identified as suspects in the attacks, including one photograph that showed one of the men placing a package at the location of the second explosion.

webside：http://global.britannica.com/EBchecked/topic/1924021/Boston-Marathon-bombing-of-2013

Structure of the Lead：

WHO-marathon runnerWHEN-2013WHAT- marathon bombingWHY-terroristWHERE-BostonHOW-In the marathon competition ,there had three bombs explore, and hurt many marathon runner,after investigation they found that it is a terrorist attack.  

Key word-

1. commemorate紀念/為...慶祝

2.Lexington萊星頓市(美國肯德基州)

3.Concord一致/協定

4.Hopkinton霍金普頓市

5.contested角逐/競爭

6.erected安裝/設立

7.federal國家的/美國聯邦政府

8.law-enforcement執法

9.solicited懇求/徵求

10.relevant關係重大的/中肯的

11. bearings壓力/方向

12.detonated爆炸/引爆