单项选择题

When Taylor died in 1915, ______.

A．his steel mill was sold
B．his book was published
C．the slave-driving method had already been stopped
D．a lot of followers continued to improve his theory

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单项选择题

Charles Babbage, an English academic,______.

A．tried to use computers in production processes
B．first used computers in the area of cost accounting
C．was the father of modern computers
D．tried scientific approaches to calculate the costs

单项选择题

According to the passage, what was badly needed to improve industrial efficiency

A．Great breakthroughs.
B．Unlimited purchasing power.
C．Science and competition.
D．International competition.