阿摩線上測驗
1. The rain_________the progress of the mountain climbers.
(A) extended
(B) impeded
(C) improved
(D) distributed
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統計： A(10), B(33), C(3), D(16), E(0) #1184687
統計： A(10), B(33), C(3), D(16), E(0) #1184687
