5．Shescanned（瀏覽，掃描）the computer screen carefully hoping to find some new emails in her mailbox．

分析 她仔細(xì)地瀏覽了電腦屏幕，希望在她的郵箱中找到一些新的郵件．

解答 scanned，考查謂語動詞的用法，有中文意思可知使用動詞scan，根據(jù)語境可知動作已發(fā)生，因此使用一般過去時，注意scan是以一個輔音字母結(jié)尾的重讀閉音節(jié)詞，其過去式為scanned．

點評 對于翻譯填空這種題，要分析句子意思，再從結(jié)構(gòu)上和意義上對答案進(jìn)行確定．

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科目：高中英語 來源： 題型：閱讀理解

15．When an ant dies，other ants take it out of the nest，often within an hour after its death．This behavior interests scientists and they wonder how ants know for sure-and so soon-that another ant is dead．
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To test his theory，Choe and his team put different chemicals on ants．When the scientists used the"I'm dead"chemical，other ants quickly moved the treated ant away．When the scientists used the"Wait-I'm not dead yet"chemical，other ants left the treated ant alone．Choe believes this behavior shows that the"not dead yet"chemical overrides the"dead"chemical when picked up by other ants．And that when an ant dies，the"not dead yet"chemical fades away．Other nearby ants then detect the remaining"dead"chemical and remove the body from the nest．
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57．What is the function of the first paragraph？C
A．Leading the following paragraphs．
B．Showing the main idea of the passage．
C．Introducing the background of the passage．
D．Giving a summary of the passage．
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A．is weaker than        B．is stronger than    C．is better than    D．is worse than
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B．When an ant dies，it can tell others using a certain chemical．
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B．Choe is a biologist who is only interested in animals，especially in ants．
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科目：高中英語 來源： 題型：閱讀理解

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A．replacing human work with robots
B．improving mechanical efficiency
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