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By Sonja Pace London 30 June 2007 British police officers walk past tourists in the pouring rain in central London, 30 Jun 2007 London is on alert - police have stepped up patrols and a search is under way for a man seen running from a Mercedes car
2007年VOA标准英语（六月）
About 6,000 London police officers are guarding the city's mass transit network Thursday, precisely four weeks after a four-man team of British Muslim suicide bombers killed themselves and 52 passengers on subway trains and a bus. 英国星期四出动
VOA双语新闻 Bilingual News
By Jim Teeple Jerusalem 15 March 2006 Israeli police and defense forces are on high alert, after Israeli forces captured a leading Palestinian militant after storming a jail in the West Bank city, Jer
2006年VOA标准英语（三月）
By Douglas Bakshian Manila 11 June 2006 Police investigators take a look at the damage caused by a suspected homemade bomb or a grenade as it exploded in a bus being used as a mobile police station in Manila's suburban Quezon city Philippine police
2006年VOA标准英语（六月）
今天我们要学的词是alert。 Alert, 警戒，警报。 The National Weather Service put the area under a tornado alert until 7 o'clock tonight, 国家气象局对本地发布龙卷风警告，晚上七点钟解除。 The police sent out a crim
英语每日一词
今天我们要学的词是alert。 Alert, 警戒，警报。 The National Weather Service put the area under a tornado alert until 7 o'clock tonight, 国家气象局对本地发布龙卷风警告，晚上七点钟解除。 The police sent out a crim
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