21. The question raised by the instructor is intended to inspire students to think outside the box,
(A) think negatively
(B) think creatively
(C) think positively
(D) think specifically
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統計: A(2), B(84), C(5), D(6), E(0) #1028933
統計: A(2), B(84), C(5), D(6), E(0) #1028933