11. The stock market is notoriously capricious, often changing direction without warning.
(A) impulsive
(B) predictable
(C) steady
(D) reliable
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統計: A(56), B(4), C(3), D(2), E(0) #3493854
統計: A(56), B(4), C(3), D(2), E(0) #3493854