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  3. A land not suffering from destruction, plus wealth, natural resources, and labour supply--all these were important factors in he

A land not suffering from destruction, plus wealth, natural resources, and labour supply--all these were important factors in he

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问题     A land not suffering from destruction, plus wealth, natural resources, and labour supply--all these were important factors in helping England to become the center for the Industrial Revolution.【21】they were not enough. Something else was needed to start the industrial process. That "some thing special"  was men--【22】individuals who could invent machines,  find new【23】of power,
    The men who【24】the machines of the Industrial Revolution【25】from many backgrounds and many occupations. Many of them were【26】inventors than scientists. A man who is pure scientist is primarily interested in doing his research【27】. He is not necessarily working and that his findings can be used.
    An inventor or one interested in applied science is usually trying to make something that has a real and specific【28】. He may try to solve a problem by using the theories of science or by experimenting through trial and error. Regardless of his method, he is working to obtain a【29】result: the construction of a harvesting machine, the burning of light bulb, or one of【30】other objectives. Most of the people who developed the machines were inventors, not trained scientists.
选项 A、origins
B、sources
C、bases
D、discoveries
答案B
解析 根据上题的语境线索：人们发明了机器也就找到了新的动力的来源。应该选择B项sources (来源)。A项origin意思为“起源”(the beginning of something)，如：The origin of the custom is un known．人们不知道这习俗的起源。
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