某产品经由两道工序制成，各工序的原材料消耗定额为：第一道工序400千克，第二道工序200千克。 要求：

tion that have been properly【B1】so that the machine can work【B2】them. Processing means handling the material that has been presented to the machine in【B3】ways as performing calculations, classifying information, or【B4】comparisons. A computer is made of millions of electronic【B5】that can store the data or switch them through【B6】circuits with different functions at【B7】speeds.

In only a short time, computers have【B8】changed the way in which many kinds of work are done.【B9】, they have created whole new areas of work that did not exist【B10】to their development. We have all heard of computers【B11】the course of rockets, preparing bank statements,【B12】elections, forecasting weather, and so【B13】Computers do many tasks for us that would be【B14】difficult if we did not have them. Computers take routine tasks and do them in a【B15】of the time it would take a man or even a【B16】of men to do them.

Many people imagine that a computer is a very large【B17】machine. Certainly a computer can function in that way,【B18】this is a very restricted view of the nature of a computer. The message of a familiar【B19】is that machines should work, but men should think. This is the basic philosophy of computer science,【B20】in the advanced states of computer technology.

【B1】

A．done

B．prepared

C．explored

D．investigated

tion 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.

【C1】

A．done

B．prepared

C．explored

D．investigated

In which situations computers do not perform. better than the human mind？

A、performing an operation

B、docking a big ship

C、playing backgammon

D、doing the work of a postal clerk

ntegrated circuits and the invention of().

A、microprocessor

B、transistor

C、chip

D、circuit

A 2006 study found that______.

A．both the Chinese and Westerners use the same part of the brain to do arithmetic

B．the Chinese use visual and spatial circuits while Westerners use language circuits

C．the Chinese conceive numbers as words while Westerners conceive numbers as symbols

D．neural processes involving basic mathematical computations are universal.

y computers, which occupy a fraction of the space. Simple computers are small enough to fit into mobile devices, an mobile computers can be powered by small batteries. Personal computers in their various forms are icons of the Information Age and are what most people think of as ‘computers’.

A.Central Processing Unit

B.integrated circuits

C.Hard disk

D.software integration

A 2006 study found that______.

A．both the Chinese and Westerners use the same part of the brain to do arithmetic

B．the Chinese use visual and spatial circuits while Westerners use language circuits

C．the Chinese conceive numbers as words while Westerners conceive numbers as symbols

D．neural processes involving basic mathematical computations are universal.

The group is made up of local___(music)who have been performing together for several years.