21.A new design of contact lens which blocks certain wavelengths of light gives athletes _____.
(A) a disadvantage
(B) a job
(C) a outlook
(D) a look
(E) an edge

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統計： A(5), B(6), C(10), D(2), E(5) #1093383

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#3921486
give an edge占一點優勢
(共 19 字，隱藏中）
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