U.S. Fed chair Yellen reiterates gradual rate hike path

U.S. Federal Reserve Chair Janet Yellen (C) testifies before the U.S. Congress Joint Economic Committee on Capitol Hill in Washington D.C., the United States, Nov. 29, 2017. Janet Yellen said on Wednesday that it is appropriate for the central bank to continue gradual interest rate hikes on the expectation that the economy and job market would remain strong. (Xinhua/Yin Bogu)