12. The Louisiana Purchase was an _____ deal for the United States, the final cost totaling less than five cents
per acre at $15 million.
(A) invisible
(B) insatiable
(C) instable
(D) incredible
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統計: A(16), B(24), C(27), D(108), E(0) #3426221
統計: A(16), B(24), C(27), D(108), E(0) #3426221