Indeed, a number of them, including __ Ban Ki-moon of South Korea, learned or improved their English while enrolled at U.S. universities.（ ）。 A.UN Secretary-General B.Secretary of State C.Director-General D.head of state

Indeed, a number of them, including __ Ban Ki-moon of South Korea, learned or improved their English while enrolled at U.S. universities.（ ）。 A.UN Secretary-General B.Secretary of State C.Director-General D.head of state

正确答案：A