阿摩線上測驗
46. What is the best title for this passage?
(A) The Benefits of Surveillance
(B) The Definitions of Surveillance
(C) The Inventions about Surveillance
(D) The Arguments about Surveillance
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統計： A(69), B(75), C(117), D(171), E(0) #2283470
統計： A(69), B(75), C(117), D(171), E(0) #2283470