单项选择题

The ______ of medical knowledge are being pushed farther outwards as time goes on.

A．edges
B．borders
C．boundaries
D．frontiers
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单项选择题
He thought the lunch was terrible, and the same ______ all the rest of us too.
A．goes after
B．goes at
C．goes for
D．goes with
单项选择题
Kate won't leave the TV set ______ her supper's on the table.
A．as if
B．even though
C．provided that
D．in case
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