Computers are often advertised according to their memory capacity.

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发布时间：2022-12-03

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第1题

从供选择的答案中选出应填入下面一段英文中______内的正确答案。 In computers, encoding is the process o

从供选择的答案中选出应填入下面一段英文中______内的正确答案。

In computers, encoding is the process of putting a sequence of(1)characters (letters, numbers, punctuation, and certain symbols) into a specialized(2)format for efficient transmission or storage.(3)Decoding is the opposite process—the conversion of an encoded format back into the original(4)sequence of characters. Encoding and decoding are used in data communications, networking, and storage. The term is especially(5)applicable to radio (wireless) communications systems.

The terms encoding and decoding are often used in reference to the(6)processes of analog-to-digital conversion and digital-to-analog conversion. In this sense, these(7)terms can apply to any form of data, including text, images, audio, video,(8)multimedia, computer programs, or signals in sensors, telernetry, and control systems. Encoding should not be confused with encryption, a process in which data is deliberately altered so as to(9)concealits content. Encryption can be done without changing the particular(10)code that the content is in, and encoding can be done without deliberately concealing the content.

供选择的答案：

1．terms 2．Decoding 3．processes 4．format 5．code

6．multimedia 7．applicable 8．conceal 9．equence 10．characters

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第2题

A recent development is the local area network （LAN).【21】its name implies, it【22】a local a

A recent development is the local area network (LAN).【21】its name implies, it【22】a local area—possibly as small as a single room, typically an area like an university campus or the premises of a particular business. Local area networks were developed to【23】a need specific to microcomputers—the sharing of expensive resources. Microcomputers are cheap,【24】highcapacity disc stores, fast and/or good quality printers, etc. are expensive. The object of the LAN is to allow【25】microcomputers shared access to these expensive resources. Since the microcomputers are【26】, it is a necessary feature of a LAN that the method of connection to the network, and the network hardware【27】, must also be cheap.

A local area network links a number of computers and a number of sewers【28】provide communal facilities, e. g. file storage. (A server usually includes a small microprocessor for control purposes.) The computers and servers are known【29】stations. There are two methods of【30】in common use, tings and broadcast networks.

In the ring method(often called a Cambridge Ring)all the stations are linked in a ring,【31】includes one special station, the monitor station.

In broadcast networks, all the stations are【32】to a single linear cable (usually co-ax cable), and any transmission will be received by all stations.

【33】technology is used, local area networks are a development of the greatest importance.【34】as programming is simplified by an approach that thinks in terms of small procedures or programs, each doing a well-defined job, the computer system of tomorrow is likely to be【35】lots of small systems, each doing a specific job, linked by a local area network.

(41)

A．As

B．Like

C．Since

D．Because

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第3题

Microminiaturization of future computers will be realized through the use of ______. A．superconduct

Microminiaturization of future computers will be realized through the use of ______.

A．superconductivity B．molecules

C．DNAs D．smaller chips

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