17．_____ the website of the Fire Department in your city，and you will learn a lot about firefighting．（　�。�
A．Having searchedB．To searchC．SearchingD．Search

分析 當你瀏覽你們城市消防部門的網(wǎng)站時，你會學到很多關(guān)于消防的知識．

解答 答案：D，考查特殊句型．"祈使句+and+句子（將來時）"表示"當你…，你會…"，祈使句+連詞+陳述句=If條件句，主句．句意：當你瀏覽你們城市消防部門的網(wǎng)站時，你會學到很多關(guān)于消防的知識．本題=If you search the website of the Fire Department in your city，you will learn a lot about firefighting．故D正確．

點評 考查祈使句的用法，英語中表示請求、命令、叮囑的語氣要用到祈使句，要注意句子的意思．

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