57. The United States is made up
of fifty states, one of ________ is separated from the others by the Pacific Ocean. (Shanghai2005
Spring)
A. them B.
those C.
which D.
whose
Key:
1-20:
BBDCD CDCBD CADCA DABDC 21-40: AACDB
DDDDC BDAAD DBBAD
41-56:
BDBCD CCBCC DABCB AC