Medica facilities are being upgraded. (2004年真题)（）A.expanded B.repaired C.improve

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问题 Medica facilities are being upgraded. (2004年真题)（）

选项 A.expanded
B.repaired
C.improved
D.transferred

答案C

解析upgrade=up+grade.动词短语grade up的含义是"升级""提高等级"的意思,所以推测 upgrade也有同样的含义.

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