阿摩線上測驗
9. Learning is often compared to sailing a boat against water; it either _____ or retreats. That is, perseverance and discipline
play a role.
(A) shrinks
(B) advances
(C) paralyzes
(D) convinces
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統計： A(39), B(59), C(19), D(25), E(0) #2132641
統計： A(39), B(59), C(19), D(25), E(0) #2132641