摘要： Schools in the south tend to be better equipped, those in the north are relatively poor. A. because B. when C. while D. unless
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Schools in the south tend to be better equipped, _____ those in the north are relatively poor.
[ ]
A. while
B. since
C. when
D. as
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B. since
C. when
D. as
Schools in the south tend to be better equipped, ________ those in the north are relatively poor．
[ ]
A．
while
B．
since
C．
when
D．
as
Schools in the north tend to be better equipped, ______ those in the south are relatively poor.
A. as B. unless C. when D. while
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