Directions: For each blank in the following passage,there are four choices marked A， B，C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the Answer Sheet

　　A land free from destruction，plus wealth，natural resources，and labor supply-all these. were impor-tant 21 in helping England to become the center for the Industrial Revolution. 22 they were not e-nough. Something 23 was needed to start the industrial process. That“something special” was men-- 24 individuals who could invent machines， find new sources of power， and establish business organiza-tions to reshape society.

　　The men who 25 the machines of the Industrial Revolution came from many backgrounds and many occupations. Many of them were 26 inventors than scientists. A man who is a 27 scientist is prima-rily interested in doing his research research accurately. He is not necessarily working 28 that his findings can be used.

　　An inventor or one interested in applied science is 29 trying to make something that has a concrete use. He may try to solve a problem by using the theories 30 science or by experimenting through trial and error. Regardless of his method，he is working to obtain a 31 result: the construction of a harves- ting machine， the burning of a light bulb， or one of 32 other objectives.

　　Most of the people who 33 the machines of the Industrial Revolution were inventors, not trained scientists. A few were both scientists and inventors. Even those who had 34 or no training in science might not have made their inventions 35 a groundwork had not been laid by scientists years before.

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

　　( )22. A. But B. And C. Besides D. Even

　　( )23. A. else B. near C. extra . D. similar

　　( )24. A. generating B. effective C. motivating D. creative

　　( )25. A. employed B. created C. operated D. controlled

　　( )26. A. less B. better C. more D. worse

　　( )27. A. genuine B. practical C. pure D. clever

　　( )28. A. now B. and C. all D. so

　　( )29. A. seldom B. sometimes C. all D. never

　　( )30. A. of B. with C. to D. as

　　( )31. A. single B. sole C. specialized D. specific

　　( )32. A. few B. those C. many D. all

　　( )33. A. proposed B. developed C. supplied D. offered

　　( )34. A. little B. much C. some D. any

　　( )35. A. as B. if C. because D. while

　　答案：21. C 22. A23.A24.D25.B26.C27.C28.D29.C30.A31.D32.C33.B34.A35.B