阿摩線上測驗
3.Some species were made inviable because of an inability to establish a cleaning symbiosis.
(A)unable to survive
(B)unable to communicate
(C)unable to move
(D)unable to be defeated
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統計： A(23), B(3), C(2), D(2), E(0) #2322843
統計： A(23), B(3), C(2), D(2), E(0) #2322843
