单项选择题

A．Irrigating desert areas.
B．Use for cold seawater.
C．Techniques for preserving the environment.
D．The importance of conserving energy.
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单项选择题
A．Try to help him find rooms in another hotel.B．Check to see if there are any vacancies in her hotel.C．Let him move to a room with two single beds.D．Show him the way to Imperial Hotel.
A．Try to help him find rooms in another hotel.
B．Check to see if there are any vacancies in her hotel.
C．Let him move to a room with two single beds.
D．Show him the way to Imperial Hotel.
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