47 What can be said of the cost of the oil that U.S. companies used to import from overseas?
(A)High.
(B)Extreme.
(C)Inexpensive.
(D)Expensive.
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統計: A(90), B(56), C(1147), D(165), E(0) #630344
統計: A(90), B(56), C(1147), D(165), E(0) #630344