As time went on, the police _______ their search for the _______ student.

A. handled up; missed B. defended up; losing

C. stepped up; missing D. stayed up; lost

C

【解析】

試題分析：考查詞匯詞組辨析及非謂語(yǔ)動(dòng)詞。句意：隨著時(shí)間的推移，警方加強(qiáng)失蹤的學(xué)生的搜索。handle up處理；defend up加強(qiáng)防御；step up加快速度，加強(qiáng)；stay up熬夜。過(guò)去分詞表示已經(jīng)失蹤的狀態(tài)，而現(xiàn)在分詞表示正在失蹤的動(dòng)作。miss指丟失，錯(cuò)過(guò)某事物，lost指失敗，失蹤。根據(jù)句意，故選C。

考點(diǎn)：考查詞匯詞組辨析及非謂語(yǔ)動(dòng)詞

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