4a2b,6b3c,2ac2的最简公分母是12a2b3c2.
故答案为12a2b3c2.
After graduating from college, I took some time off to go travelling, __________ turned out to be
a wise decision. [ ]
A. that
B. which
C. when
D. where
Jim passed the driving test, _______ surprised everybody in the office.
A.which
B.that
C.this
D.it