We have to install new water pipes in our house; these are corroded.

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问题 We have to install new water pipes in our house; these are corroded.

选项 A、worn thin
B、worn away
C、worn up
D、worn hollow

答案B

解析画线词corroded．的意思是worn away，即磨损、腐烂掉。。辨义：A．worn thin磨薄；C．worn up穿旧；D．worn hollow穿了洞。

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