6. Climbing Mount Everest is a remarkable _____ that requires great strength, endurance, and determination.
(A) feat
(B) scent
(C) gadget
(D) defect
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統計: A(73), B(47), C(51), D(23), E(0) #3426215
統計: A(73), B(47), C(51), D(23), E(0) #3426215