成人英语三级
Broadband technology is seen as the key to the new digital economy． In this rapidly changing world, media and technology information can be sent via phone calls and downloads like music, graphics, business information or films． The simpler the information, the smaller the package and the narrower the bandwidth needed to deliver it．
Broadband is used for high speed Internet connections at a fixed monthly rate． It turns an existing telephone line into a high speed digital line capable of carrying data up to 40 times conventional modem speeds． Any download is available at the click of a mouse—there is no dial-up as there is with standard Internet Service Providers． For home owners and fam-ilies there are many advantages． One of the most important is simultaneous (同时的) access to both telephone lines and the Internet． No queues and no delay． For businesses,broadband can improve customer relations and provide direct access to corporate e-mails and databases．
Entire operations can go online．
The function that broadband technology has on the new digital economy is__________．
A．further
B．critical
C．costly
D．global
宽带技术被看做新数字经济的关键所在。在这个瞬息万变的世界，音乐、图片、商业信息或者电影等媒体或技术信息可以通过电话或者下载进行发送。信息越简单，压缩包就越小，所需要进行传输的宽带就越窄。
宽带进行高速网络连接的每个月的费用是固定的。它将原有的电话线变成能够比传统的调制解调器速度快四十倍的高速数字网线。只要点一下鼠标就可以任意下载，不需要拨号，因为有统一的标准网络服务供应商。在家里使用宽带有很多好处。其中之一就是电话线和网络可以同时使用。不用排队，也不会延迟。对于商人来说，宽带能够增进他们与顾客的关系，并让他们直接可以链接到公司的邮箱和数据库。整个操作都可在网上进行。
【答案详解】
逻辑推理题。从文中Broadband technology is seen as the key to the new digital economy(宽带技术被看做新数字经济的关键所在)可推断出，宽带技术在新数字经济中发挥了至关重要的作用。
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