290.Mark is a renowned scientist and musician,but people sometimes puzzle over his _______ behavior.
(A) fragile
(B) reasonable
(C) plastic
(D) erratic
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統計: A(1), B(8), C(3), D(44), E(0) #2894482
統計: A(1), B(8), C(3), D(44), E(0) #2894482