第二节 完型填空
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。
A land free from destruction (破坏), plus wealth, natural resources, and labor supply, all these were important 【B1】 in helping English to become the center for the Industrial Revolution. 【B2】 they were not enough. Something 【B3】 was needed to start the industrial process. That "something special" was men-- 【B4】 individuals (个人)who could invent machines, find new 【B5】 of power, and set up business organizations to reshape(改造) society.
The men who 【B6】 the machines of the Industrial Revolution 【B7】 from many backgrounds and many occupations(职业). Many of them were 【B8】 inventors than scientists. A man who is a 【B9】 scientist is mainly interested in doing his research 【B10】 and exactly, he is not necessarily working 【B11】 that his findings can be used.
An inventor or one interested in applied science is 【B12】 trying to make something that has an actual 【B13】 He may try to solve a problem by using the theories 【B14】 science or by experimenting through correct and error. Regardless of his method, he is working to obtain a 【B15】 result : the construction of a harvesting machine, the burning of a light bulb, or one of 【B16】 other objectives.
Most of the people who 【B17】 the machines of the Industrial Revolution were inventors, not trained scientists. A few were both scientists and inventors, even those who had 【B18】 or no training in science might not have made their, inventions 【B19】 a ground work had not been laid by scientists years 【B20】 .
【B1】

A. cases
B. reasons
C. factors(因素)
D. situations