50. Which of the following statement is NOT correct?
(A) Bitcoins were created 5 years ago by an engineer.
(B) It is unlikely for us to live more than 3 months only by using bitcoins.
(C) The buying and selling bitcoins can be done totally through the Internet.
(D) The author holds a positive attitude toward the future of bitcoins.
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統計: A(12), B(55), C(22), D(6), E(0) #644140
統計: A(12), B(55), C(22), D(6), E(0) #644140