单项选择题

A. The workers on the underground platforms were replaced by machines.
B. It became the first completely automatic railway in the world.
C. A completely automatic line was added to its network.
D. Its trains became computer-controlled.
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单项选择题
A. To include mass production and the assembly line among Henry Ford’s accomplishments. B. To report the origin of the minimum wage. C. To credit Henry Ford with industrial reforms. D. To defend Henry Ford’s practices.
A. To include mass production and the assembly line among Henry Ford’s accomplishments.
B. To report the origin of the minimum wage.
C. To credit Henry Ford with industrial reforms.
D. To defend Henry Ford’s practices.
单项选择题
A. Careers in environmental engineering.B. A way to improve fuel efficiency in buses.C. The causes of air pollution.D. A new fuel for buses.
A. Careers in environmental engineering.
B. A way to improve fuel efficiency in buses.
C. The causes of air pollution.
D. A new fuel for buses.
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