阿摩線上測驗
23. The driving ___ for water movement can change with environmental conditions and with location in the planet.
(A) formula
(B) force
(C) fellow
(D) fleet
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統計： A(113), B(133), C(42), D(113), E(0) #2902662
統計： A(113), B(133), C(42), D(113), E(0) #2902662
