Mario Draghi, president of the European Central Bank (ECB) attends a press conference following the monthly monetary policy meeting in Frankfurt, Germany, Dec. 6, 2012. The ECB on Thursday decided it would hold the interest rates unchanged and continue to conduct main refinancing operations (MROs). (Xinhua/Luo Huanhuan)

Mario Draghi, president of the European Central Bank (ECB) attends a press conference following the monthly monetary policy meeting in Frankfurt, Germany, Dec. 6, 2012. The ECB on Thursday decided it would hold the interest rates unchanged and continue to conduct main refinancing operations (MROs). (Xinhua/Luo Huanhuan)

Mario Draghi, president of the European Central Bank (ECB) attends a press conference following the monthly monetary policy meeting in Frankfurt, Germany, Dec. 6, 2012. The ECB on Thursday decided it would hold the interest rates unchanged and continue to conduct main refinancing operations (MROs). (Xinhua/Luo Huanhuan)

Mario Draghi, president of the European Central Bank (ECB) attends a press conference following the monthly monetary policy meeting in Frankfurt, Germany, Dec. 6, 2012. The ECB on Thursday decided it would hold the interest rates unchanged and continue to conduct main refinancing operations (MROs). (Xinhua/Luo Huanhuan)