单项选择题

A．He established a government service.
B．He developed a system called "star routes".
C．He built a lot of post offices.
D．He established the postal system.
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单项选择题
A．The man has quit his job.B．The man is going to school.C．The man is promoted.D．The man failed in his work.
A．The man has quit his job.
B．The man is going to school.
C．The man is promoted.
D．The man failed in his work.
单项选择题
A．It should be assimilated thoroughly.B．It should be enclosed in quotation marks.C．It should be paraphrased by the student.D．It should be authorized by the author.
A．It should be assimilated thoroughly.
B．It should be enclosed in quotation marks.
C．It should be paraphrased by the student.
D．It should be authorized by the author.
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