17．The police are appealingto the public for any information about the missing boy．

分析 警方正向呼吁公眾提供有關(guān)失蹤男孩的任何信息．

解答 答案是to．本題考查語境中選用恰當?shù)脑~或短語的適當形式．a(chǎn)ppeal to向…呼吁；對…有吸引力；故答案是to．

點評 單詞填空必須在對語境整體理解的基礎(chǔ)上抓住指向答案的關(guān)鍵線索、固定句型或搭配等，同時注意所選詞的形式變化．

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