Since 1945 the United States had entered a twenty-five-year period of economic boom, but its ______ industry did not experience great development.
A.automobile B.aerospace C.housing D.defense正确答案B
Since 1945 the United States had entered a twenty-five-year period of economic boom, but its ______ industry did not experience great development.
A.automobile B.aerospace C.housing D.defense正确答案B
