单项选择题

As we know, Galieo invented ______ telescope.

A．×
B．the
C．a
D．one
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单项选择题
It is well known that ______ doctors are badly needed in the hospital.
A．a
B．an
C．the
D．×
单项选择题
Would you do me ______ favour Do me ______ favour to turn on the TV.
A．a, the
B．the, a
C．× ,a
D．the, ×
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