A．presenceB．arrivalC．newsD．right

Coming at the Town Hall, the Queen was welcomed by the Mayor.A．On reachingB．On arrivalC．At

【C16】A．presenceB．existenceC．accompanimentD．appearance

【C19】A．useB．arrivalC．denialD．free

在因特网上专门用于传输文件的协议是 ______。A.FTPB.HTTPC.NEWSD.Word

Owners of a legal right to a book may______their right to someone else through a written c

设a=计算机等级考试 结果为“考试”的表达式是( )。A.Left(a 4)B.Right(a 4)C.Left(a 2)D.Right(