The operation could prolong his life by tw

People could have operations done by top doctors without _____ to trayel to the city w

He was ______ by the noise outside yesterday evening and could not concentrate on his stud

The operation could______her life by two or three years.（2014－68)A．prolongB．increaseC．expa

The operation could ____her life by two or three years.A．prolongB．increaseC．expandD．contin

As G. Bernard Shaw says,"Happy is the man who is living by his hobby. "With a rapid life p

Another important way to prolong the life of cut