26. What is the main purpose of this passage?
(A) To provide free access to an online course
(B) To introduce a book about negotiation in marketing
(C) To invite people to join a debating club
(D) To advertise a new communication class
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統計: A(0), B(1), C(0), D(5), E(0) #3557108
統計: A(0), B(1), C(0), D(5), E(0) #3557108