单项选择题

A．They are tour guides.
B．They are salespersons.
C．They are tourists.
D．They are engineers.
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单项选择题
A．Good, but needs improvement.B．It’s good enough.C．Good, but it can make people lazy.D．Good, but the computers are likely to be attacked by hackers from the Internet.
A．Good, but needs improvement.
B．It’s good enough.
C．Good, but it can make people lazy.
D．Good, but the computers are likely to be attacked by hackers from the Internet.
单项选择题
A．How New York became the largest city in the Unite States.B．How the Eric Canal is built.C．Why New York has attracted so many people from the world.D．Their tour in New York.
A．How New York became the largest city in the Unite States.
B．How the Eric Canal is built.
C．Why New York has attracted so many people from the world.
D．Their tour in New York.
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