单项选择题

A．one day
B．two days
C．one week
D．two weeks
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单项选择题
A．positiveB．negativeC．optimisticD．pessimistic
A．positive
B．negative
C．optimistic
D．pessimistic
单项选择题
A．entertain and advertiseB．educate and advertiseC．educate and entertainD．be informative and instructive
A．entertain and advertise
B．educate and advertise
C．educate and entertain
D．be informative and instructive
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