20. Which word is closest in meaning to "proactive" as used in the final paragraph?
(A) passive
(B) hesitant
(C) precautionary
(D) aggressive
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統計: A(1), B(4), C(28), D(3), E(0) #3891949
統計: A(1), B(4), C(28), D(3), E(0) #3891949