题目内容：
根据以下内容，回答题。Directions: This task is the same as Task 1.The 5 questions or unfinished statements are numbered 41through 45.
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 download 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 exciting telephonline 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 Sery ice Providers.
For home owners and families there are many advantages. One of the most important is simultaneous(同时的)access to both telephone lines and the Intemet. No walt and no delay. businessess , broadband can improve customer relations and provide direct access to corporate e-mails an
For 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
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答案解析：