Economic fallout from the coronavirus pandemic has cast doubt on whether China can meet its targets to buy U.S. goods under this year’s trade deal—with energy emerging as the biggest casualty. China has made strides toward its agricultural and manufacturing targets, but it remains far behind—maybe hopelessly far—an ambitious target for purchases of oil, natural gas, refined petroleum products like propane and butane, and coal, prompting concerns from the U.S. energy industry which is encouraging the U.S. Trade Representative…