23．Schools in the north tend to be well equipped, those in the south are relatively poor. A——青夏教育精英家教网—

摘要：23．Schools in the north tend to be well equipped, those in the south are relatively poor. A．once B．while C．as D．until

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

　 A．once　　　　 B．while　　　　　　　　　　　　　 C．as　　　 D．until

2010—2011学年度第二学期高三综合练习

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

A．once B．while C．as D．until

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