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.
   【C1】______they were not enough. Something else was needed to start the industrial process. That "something special" was men—【C2】______individuals who could invent machines, find new sources of power, and establish business organizations to reshape society.
    The men who【C3】______the machines of the Industrial Revolution came from many backgrounds and many occupations. Many of them were【C4】______inventors than scientists. A man who is a pure scientist is primarily interested in doing his research【C5】______He is not necessarily working so that his findings can be used. An inventor or one interested in applied science is【C6】______trying to make something that has a concrete idea. He may try to solve a problem by using the theories【C7】______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【C8】______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【C9】______or no training in science might not have made their inventions if a groundwork had not been laid by scientists years【C10】______.
【C10】

选项 A、ago
B、past
C、ahead
D、before

答案D

解析 本句意思是:若不是科学家们多年前就打下了基础,那些很少或没有受过科学训练的人也许不会进行他们的发明创造。这里需要的意思是“在……之前”,涉及的时间概念是“过去的过去”,因此只能选用D。与ago搭配的一般是从现在开始的一个具体时间段,例如:20 year’s ago。
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