成人英语三级

单选题 The main feature of a neural-network computer is that__________．

A．its processors act as an interconnected web of neurons
B．it is programmed to make decisions
C．its networks are of all shapes and sizes
D．its neurons are artificial

参考答案：A进入在线模考
本题问到神经网络计算机的主要特点，从第二段这句The processors in a neural—network computer，by contrast，form a network much like the nerve cells in the brain可以看出，神经网络计算机的处理器能够形成跟大脑神经细胞很相似的网络，也就是指interconnected web of neurons(互相交错的神经网)，这正是这种计算机不同于普通计算机最显著的特点。A为正确选项。

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1The expression "this two-dimensional approach" in the second paragraph refers to__________．

A．the conventional computer and the neural computer
B．making decisions and recognizing patterns
C．sharing information and performing tasks
D．the computer and the human brain

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2 Scientists use software rather than hardware in their experiments because__________．

A．it can avoid redesigning computer chips
B．it can save a lot of time and money
C．it can avoid making mistakes
D．it is more like the human brain

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3根据下面资料，回答题
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

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