Tokyo stocks sharply rose Wednesday, with the Nikkei Stock Average surging 208.27 points, or 2.3%, to end the day at 9,260.34, the highest level since the benchmark index reached 9,299 on August 5. The Bank of Japan\'\'s announcement Tuesday about its additional monetary easing prompted investors to sell the yen aggressively against the dollar and the euro. Gains were especially large for such exporters as carmakers, electric machinery makers and machinery makers. Cyclical issues, including marine shippers, and financial firms, such as banks, brokerages and insurers, also rose significantly.