单项选择题

______ only three bodies have been discovered.

A．By far
B．So far
C．As far as
D．Far from
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单项选择题
The news ______ the radio announced surprised everybody.
A．which
B．that
C．in which
D．where
单项选择题
Today, housework has been made much easier by electrical ______
A．facilities
B．appliances
C．instruments
D．equipments
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