A land free from destruction, plus wealth, natural resources, and labor supply—all these were important factors, in helping Engl

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问题     A land free from destruction, plus wealth, natural resources, and labor supply—all these were important factors, in helping England to become the center for the Industrial Revolution.
    【31】they were not enough. Something else was needed to start the industrial process. That "something special" was men—【32】individuals who could invent machines, find new sources of power, and establish business organizations to reshape society.
    The men who【33】the machines of the Industrial Revolution came from many backgrounds and many occupations. Many of them were【34】inventors than scientists. A man who is a pure scientist is primarily interested in doing his research【35】. He is not necessarily working so that his findings can be used. An inventor or one interested in applied science is【36】trying to make something that has a concrete idea. He may try to solve a problem by using the theories【37】science or by experimenting through trial and error. Regardless of his method, he is working to obtain a specific result: the construction of a harvesting machine, the burning of a light bulb, or one of【38】other objectives.
    Most of the people who developed the machines of the Industrial Revolution were inventors, not trained scientists. A few were both scientists and inventors. Even those who had【39】or no training in science might not have made their inventions if a groundwork had not been laid by scientists years【40】.  

选项 A、seldom
B、sometimes
C、usually
D、never

答案C

解析 本句理解成“对实用科学感兴趣的人通常喜欢做具体的东西”比较合理,其他词语义不合。
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