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【单选题】
What does the new study find about mental functions?A.
Some diseases inevitably lead to their decline.
B.
They reach a peak at the age of 20 for most people.
C.
They are closely related to physical and mental exercise.
D.
Some of them begin to decline when people are still young.
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举一反三
【多选题】What are the current marketing issues cofronting hoteliers?
A.
Market segmentation is increasing.
B.
Brands overlap.
C.
Increased sophistication of consumers.
D.
Increased number of amenities.
【单选题】当观察到的Uri代表的数据发生变化时，会触发ContentObserver中的（）方法。
A.
onCreate()
B.
notifyChange()
C.
onChange()
D.
以上说法都不对
【简答题】What are the current international economic problems?
【多选题】What are the current technological issues confronting hoteliers?
A.
Interactive reservation system
B.
Guestroom innovations
C.
Data mining technology
D.
Yield management
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