U.S. economic growth is set to rebound strongly in the second quarter as the scars of a brutally cold winter fade, but inflation pressures will remain tame through 2015, according to the Organization for Economic Cooperation and Development. In its latest economic outlook published on Tuesday, the OECD forecast U.S. gross domestic product expanding at a 3.9 percent annual pace this quarter, and it said it expects growth to maintain a brisk pace for the remainder of the year as well.