23. According to the passage, the phrase a positive attitude means a feeling that is _____.
(A) pessimistic
(B) electrically charged
(C) optimistic
(D) neither optimistic nor pessimistic
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統計: A(2), B(5), C(19), D(4), E(0) #1939605
統計: A(2), B(5), C(19), D(4), E(0) #1939605