試題詳解

複選題
7. Which of the following is included in the calculation of GDP?
(A) The purchase of services from a tutor who holds citizenship outside the country but resides within the country.
(B) The purchase of a new edition of a foreign textbook that was produced in a different nation.
(C) The purchase of paper supplies by a textbook company for the production of new textbooks.
(D) The purchase of a used textbook from a friend who took the same class last year.