A land free from destruction, plus wealth, natural resources, and labor supply—all these were important 1 in helping England to become the center for the Industrial Revolution. 2 they were not enough. Something 3 was needed to start the industrial process. That "something special" was men—4 individuals who could invent machines, find new 5 of power, and establish business organizations to reshape society.
　　The men who 6 the machines of the Industrial Revolution 7 from many backgrounds and many occupations. Many of them were 8 inventors than scientists. A man who is a 9 scientist is primarily interested in doing his research 10 .He is not necessarily working 11 that his findings can be used.
　　An inventor or one interested in applied science is 12 trying to make something that has a concrete use. He may try to solve a problem by 13 the theories 14 science or by experimenting through trial and error. Regardless of his method, he is working to obtain a 15 result: the construction of a harvesting machine, the burning of a light bulb, or one of 16 other objectives.
　　Most of the people who 17 the machines of the Industrial Revolution were inventors, not trained scientists. A few were both scientists and inventors. Even those who had 18 or no training in science might not have made their inventions 19 a groundwork had not been laid by scientists years 20 .
　　1.A.cases      B .reasons            C .factors           D .situations
　　2.A.But        B .And             C .Besides          D .Even
　　3.A.else       B .near               C .extra            D .similar
　　4.A.generating  B .effective          C .motivating        D .creative
　　5.A.origins      B .sources          C .bases             D .discoveries
　　6.A.employed   B .created            C .operated          D .controlled
　　7.A.came       B .arrived            C .stemmed         D .appeared
　　8.A.less       B .better             C. more            D .worse
　　9.A.genuine     B .practical           C .pure            D .clever
　　10.A.happily    B .occasionally        C. reluctantly        D .accurately
　　11.A.now      B .and                C .all              D .so
　　12.A.seldom    B .sometimes         C .all                D .never
　　13.A.planning  B .using              C .idea               D .means
　　14.A.of       B .with              C .to                 D .as
　　15.A.single     B .sole              C. specialized         D .specific
　　16.A.few      B .those              C .many              D .all
　　17.A.proposed  B .developed         C .supplied           D .offered
　　18.A.little      B .much             C .some             D .any
　　19.A.as        B .if               C .because           D .while
　　20.A.ago      B .past               C .ahead              D .before