Which of following is not true of U.S. manufacturing?

Which of following is not true of U.S. manufacturing?
A、The value of American manufactured goods is greater than that of any other country.
B、Manufacturing accounts for 18% of the U.S. gross domestic product.
C、Since the mid-1900's, the country's fastest-growing manufacturing areas have been in the Midwest and Northeast.
D、Since the Mid-1900's, U.S. industries have turned increasingly to automation.
【正确答案】：C
【题目解析】：本题考查美国的制造业。根据课本P234可知，美国制成品的价值高于任何其他国家；制造业占美国国内生产总值的18%；自20世纪中期以来，美国工业越来越多地转向自动化。