单项选择题

A．150 years.
B．115 years.
C．100 years.
D．125 years.
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单项选择题
A．Because they could not do it themselves.B．Because professional workers were very cheap.C．Because they had no time.D．Because professional workers could do much better.
A．Because they could not do it themselves.
B．Because professional workers were very cheap.
C．Because they had no time.
D．Because professional workers could do much better.
单项选择题
A．People’s leisure time is increasing.B．More and more people begin to show great interest in seeing other parts of the world.C．Improved transportation and accommodation conditions.D．Longer vacations are offered than before.
A．People’s leisure time is increasing.
B．More and more people begin to show great interest in seeing other parts of the world.
C．Improved transportation and accommodation conditions.
D．Longer vacations are offered than before.
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