单项选择题

According to the writer, intensifying global competition and immigration will ______.

A．reduce the proportion of union workers
B．reduce the real value of the minimum wage
C．increase the use of temporary workers
D．make the wages of less-educated workers go down

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单项选择题

According to the statistics of the 1980s, which of the following is NOT true

A．The top 20 percent of the workers earned more than the well-paid technicians.
B．Over half of the workers were poorly paid.
C．There were more service jobs.
D．Income still remained unequal.

单项选择题

The last sentence of the 2nd paragraph tells us that the writer believes that ______.

A．the computer is as smart as human beings
B．the computer is friends with human beings
C．human beings can interact with the computer and do what they want at their will
D．human beings have not used the computer to its fullest advantage