[单项选择]For many years, the principle goal of computer (73) was to write short pieces of code that would execute quickly. The (74) needed to be small, because memory was expensive, and it needed to be fast, because processing power was also expensive.

A. users
B. programmers
C. that
D. program

In recent years many countries of the world have been faced with the problem of how to make their workers more productive. Some experts claim the answer is to make jobs more varied. But do more varied jobs lead to greater productivity The evidence shows that while variety certainly makes the worker’s life more enjoyable, it does not actually make him work harder. As far as increasing productivity is concerned, then, variety is not an important factor.
Other experts feel that giving the worker freedom to do his job in his own way is important. There is no doubt that this is true. The problem is that this kind of freedom cannot easily be given in the modem factory with its complicated machinery which must be used in a fixed way. Thus, although freedom of choice may be important, usually very little can be done to create it.
Another important consideration is how much a worker contributes to the p
A. a factory possesses more experts
B. a factory has many small production lines
C. workers enjoy more freedom
D. workers work at a large production line