单项选择题

A．They are accurate and easy to pull.
B．Their shooting range is 40 yards.
C．They are usually used indoors.
D．They took 100 years to develop.
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单项选择题
A．Courses for doctors.B．Courses for businessmen.C．Courses for reporters.D．Courses for lawyers.
A．Courses for doctors.
B．Courses for businessmen.
C．Courses for reporters.
D．Courses for lawyers.
填空题
M
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