2. 外语
  3. Computers are electronic machines for processing data. Data are pieces or items of information that have been properly【C1】______

Computers are electronic machines for processing data. Data are pieces or items of information that have been properly【C1】______

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问题     Computers are electronic machines for processing data. Data are pieces or items of information that have been properly【C1】______so that the machine can work【C2】______them.  Processing means handling the material that has been presented to the machine in【C3】______ways as performing calculations, classifying in- formation, or【C4】______comparisons. A computer is made of millions of electronic【C5】______that can store the data or switch them through【C6】______circuits with different functions at【C7】______speeds.
    In only a short time, computers have【C8】______changed the way in which many kinds of work are done.【C9】______, they have created whole new areas of work that did not exist【C10】______to their development. We have all heard of computers【C11】______the course of rockets, preparing bank statements,【C12】______elections, forecasting weather, and so【C13】______Computers do many tasks for us that would be【C14】______difficult if we did not have them. Computers take routine tasks and do them in a【C15】______of the time it would take a man or even a【C16】______of men to do them.
    Many people imagine that a computer is a very large【C17】______machine. Certainly a computer can function in that way,【C18】______this is a very restricted view of the nature of a computer. The message of a familiar【C19】______is that machines should work, but men should think. This is the basic philosophy of computer science,【C20】______in the advanced states of computer technology.
【C15】
选项 A、part
B、fraction
C、period
D、while
答案B
解析 上文提到计算机运行速度很快，此处应该表示在短时间内完成。part“一部分”，并没有特别强调数量； a fraction of强调“一小部分的，少量的”；period用于固定搭配a period of time，time前面不加冠词；while用于固定搭配for a while表示“一小会儿”。
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