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单选

Which of the following is NOT true of U.S. foreign trade?

  • A.Canada is the largest single source of goods imported by the United States.
  • B.Outside of North America, Asia is the largest source of imports.
  • C.The U.S. share of world trade has decreased in recent years.
  • D.Whenever the American economy is in trouble, the economy of other countries is affected.
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