Question

Schools in the north tend to be better equipped, ______ those in the south are relatively poor.

A．as

B．unless

C．when

D．while

Answer 1

D

试题分析：考查连词。A因为；B除非；C当……时候；D然而。句意：北方的学校趋向于更好的装备，而那些南方的学校相对差点。故D正确。