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2016-02-01

Medical facilities are being upgraded.

A．renewed

B．repaired

C．improved

D．increased

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参考答案

C

答案解析

本题考查动词。题干：医疗设备正在被升级。upgrade是“提高、升级”的意思，因而有“改进”的含义。renew“更新”，repair“修理”。

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