By Masayuki Kitano and Vidya Ranganathan SINGAPORE (Reuters) - Some Asian stock markets rose on Wednesday following a positive lead from Wall Street, with Japan's Nikkei reaching a 5-1/2 year high and staying firm as the Bank of Japan stood pat after unleashing massive stimulus last month. European stocks are expected to inch lower with markets taking a breather from a month-long rally before U.S. Federal Reserve Chairman Ben Bernanke's testimony to Congress. Financial spreadbetters expect Britain's FTSE 100 to open down 0.16 percent, Germany's DAX to open 0. ...