阿摩線上測驗
29. The supplies are attached to umbrella-like_______ , to ensure that they will drop safely from the airplane.
(A) landscapes
(B)navigators
(C) parachutes
(D)sculptures
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統計： A(56), B(24), C(137), D(20), E(0) #1571267
統計： A(56), B(24), C(137), D(20), E(0) #1571267
