单项选择题

The major problem discussed in the passage is ______.

A．the importance of lifelong retraining of the unemployed workers
B．the social consequences of the widespread use of computers in the United States
C．the barrier to the employment of young people
D．the general rule of the advancement of technology
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单项选择题
From the passage it can be inferred that ______.
A．all school children are offered a course in the use of computer
B．all unemployed workers are being retrained
C．in reality only a certain portion of unemployed workers will be retrained
D．retraining programmes are considered very important by the government
单项选择题
The closest restatement of one industry may kill another industry . (Sent. 6, Par
A．1). is that ______.A. industries tend to compete with one anotherB. industries tend to combine into bigger onesC. one industry may increase its staff at the expense of anotherD. one industry might be driven out of business by another industry
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