13.Wehavebeenhearing______accountsofyourwork.

14.Drivestraightahead,andthenyouwillseea___totheShanghai-NanjingExpressway.

15.Awell-writtencomposition____goodchoiceofwordsandclearorganizationamongotherthings.

16.It’samistaketothinkofFloridaonly__itstouristattractions.

17.Asitturnedouttobeasmallhouseparty,we___soformally.

18.I’djustassoon___tome.

19.Windstormshaverecentlyestablishedarecordwhichmeteorologistshopewillnotbeequaledformanyyears___.

20.Hesaiditwasimpossiblefor___amistakeinacomputer’scalculation,sowecanrelyonthat.

目前，制造电子计算机使用的电子元件是：

计算机病毒是指：

计算机中，所有信息的存储都采用：

计算机唯一能够识别并直接执行的计算机语言是：

下列描述中不正确的是

用快捷键Alt+Enter打开的对话框是

快捷键Ctrl+A的功能是