39. Why are visitors required to turn off their mobile phones?
(A) To ensure the safety of others
(B)To ensure the security of the Castle
(C) To prevent them from disturbing others
(D)To prevent the use of the built-in cameras

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步筱昕

B1 · 2014/07/25

#1202695

细节理解题。在Photography and mobile phones标题下有Mobile phones must be switched off … inconsideration of other visitors.