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This week,£¨8£©leaders of the top industrial and developing economies gathered in the eastern United States. They met in Pennsylvania. for a summit on the World's financial future.£¨·¢µÄ¹ú¼ÒÓë·¢Õ¹Öйú¼ÒÁìµ¼ÈËÔÚÃÀ¹ú¶«²¿±öϦ·¨ÄáÑÇÖÝ¿ª»á£¬Îª¹ØÓÚδÀ´ÊÀ½ç½ðÈÚ·¢Õ¹µÄ·å»á×ö×¼±¸¡££©Leaders of the Group of Twenty have now met three times in less than a year to deal with the worst recession since the nineteen thirties.£¨9£©Many of their governments have used spending programs to inject five trillion dollars into their economies.£¨ÆäÖкܶàÕþ¸®Ò