A computer virus is a program or piece of code that is loade

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  • 小题1:D

    小题2:D

    小题3:C

    小题4:D

    小题1:主旨大意题。这篇文章是总分结构,所以主题句在首段。

    小题2:事实细节题。A项是望文生义,B项在文中第一段明确指出“All computer viruses are man-made.”;C项是常识错误,D项在文中首句可知。

    小题3:事实细节题。从文中第二、三、四及五段可知。

    小题4:事实细节题。从文中最后一段末句“You should store your backup copy in a separate location from your work files, one that is preferably not on your computer.”可知D项表述是错误的。