195. The plane has climbed to the cruise altitude and passengers are allowed to leave seats, but they are _____ to have their seat belts fastened while seated.
(A) relieved
(B) advised
(C) guaranteed
(D) infected

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統計： A(14), B(89), C(14), D(2), E(0) #1592405

詳解 (共 1 筆)

#2290102
（A）放心（B）建議（C）保證（D）感染
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