11．________________ a book in the library，enter a key word into the computer．（　�。�
A．To findB．FindC．To writeD．Write

分析 為了在圖書館找到書，要在電腦中輸入一個關(guān)鍵詞．

解答 答案：A 根據(jù)句子中的"輸入一個關(guān)鍵詞到電腦"，其目的是想在圖書館查找一本書，用find．此處是不定式短語做目的狀語，前置，動詞前加to．故選A．

點(diǎn)評 做題時抓住關(guān)鍵句子找到解題線索，揣摩出動詞的意義，利用動詞不定式的知識及用法選出正確的答案．

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