Rapid advances in computer and communication technologies have resulted in the(71) merger of these two fields. The lines have bluned among computing, switching, and digital transmission equipment, and the same digital techniques are being used for data, voice, and image transmission. Merging and evolving technologies, coupled with increasing demands for efficient and timely collection, processing, and(72) of information, are leading to the development of(73) that transmit and process all types of data. The ultimate goal of this evolution is something its proponents-some of the most powerful forces in the computing and telecommunications industries-call the (74) .The (74) will be a worldwide public telecommunications network that will deliver a wide variety of services. The (74) will be defined by the standardization of user interfaces, and will be implemented as a set of digital switches and paths supporting a broad range of traffic types and providing (75) processing services. Inpractice, there will be multiple networks, implemented within national boundaries, but from the user's point of view there will be a single, uniformly accessible worldwide network.

A．decreasing

B．increasing

C．collective

D．single

[单选题]RAPID表示（）。A . 快速移动开关B . 快速切削开关C . 选择停止开关D . 单节停止开关

[单选题]Whistles could also be used to communicate between adult dolphins and baby dolphins.A．RightB．WrongC．Not mentioned

[单选题]______the contrary, the rapid growth in enrollment over the last 40 years has come to an end.A． ToB． ByC． InD． On

[单选题]_____ by the advances in technology, many farmers have set up wind farms on their land.A． Being encouraged B. EncouragingC． Encouraged D. Having encouraged

[单选题]SGSN gets GGSN’s IP address by communicating to （） when a MS makes PDP context activation.A . PAPUB . HLRC . MSD . DNS

[单选题]______the contrary，the rapid growth in enrollment over the last 40 years has come to an end.A． ToB． ByC． InD． On

[单选题]( )by the advances in technology, many farmers have set up wind farms on their land.A． Being encouragedB． EncouragingC． EncouragedD． Having encouraged

[单选题]Rapid application development (RAD) systems purport to lighten the developer's(41) by making it easy to program an application with simple intuitive steps.RAD tools(42)the developer everything needed to construct a fully functional application quick

[单选题]A． ______ computer is a personal computer whose hardware is capable of using any or all of the following media in a program, text, graphics, video and animation.A．databaseB．multimediaC．networkD．mainframes

[单选题]A computer virus is a computer program that is created to make and spread (72) of itself.(72) A．programsB．virusC．copiesD．files