【題目】The traffic lights are controlled by a (centre) computer.

【答案】central
【解析】句意: 交通燈被一個中心電腦控制。此處“中心電腦”中心應是形容詞,修飾電腦,Central的意思是"中心的"。根據(jù)句意及所給單詞提示, 所以答案是central。

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