7 An airline____ travelling in secret should act normally first and then test the flight attendant with
abnormal behaviors such as being drunk, noisy, or difficult to please.
(A)individual
(B)inspector
(C)intern
(D)inventor
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統計: A(1), B(26), C(2), D(6), E(0) #742798
統計: A(1), B(26), C(2), D(6), E(0) #742798