Tokyo stocks rebounded Thursday morning, as sentiment was improved by overnight gains on Wall Street with expectations that the U.S. Federal Reserve is on course to begin cutting interest rates in September. The 225-issue Nikkei Stock Average rose 239.05 points, or 0.63 percent, from Wednesday to 38,190.85. The broader Topix index was up 2.06 points, or 0.08 percent, at 2,666.92. The U.S. dollar strengthened briefly to the upper 145 yen range in Tokyo as the yen, seen as a safe-haven asset, was sold after stocks climbed, dealers said. The dollar hit a two-week low in the mid-144 yen level in N…