单项选择题

A．They haven’’t devoted as much energy to medicine as to space travel.
B．There are too many kinds of cold viruses for them to identify.
C．It is not economical to find a cure for each type of cold.
D．They believe people can recover without treatment.
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单项选择题
A．The man wants to obtain an international driver’’s license that he can use both in the U.S. and in his country.B．The man wants to take a driver’’s test to get an Arizona driver’’s license.C．The man wants to know whether he can use his international driver’’s license in Arizona.D．The man wants to fill out an application for an Arizona driver’’s license.
A．The man wants to obtain an international driver’’s license that he can use both in the U.S. and in his country.
B．The man wants to take a driver’’s test to get an Arizona driver’’s license.
C．The man wants to know whether he can use his international driver’’s license in Arizona.
D．The man wants to fill out an application for an Arizona driver’’s license.
填空题
literature
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