A list of Benjamin Franklin’s inventions shows a man of many talents and interests. It was the scientist himself that __31__ the inventor. His natural __32__ about things and the way they  work made him try to find ways to make them work better.

    Ben had poor __33__ and needed glasses to read. He got __34__ of constantly taking then off and putting them back on, so he decided to figure out a way to make his glasses let him see both  __35__ and far. He had two pairs of glasses __36__ in half and put half of each lens in a single    frame. Today, we __37__ them bifocals(近远双视镜).

__38__ Ben is not famous for his study of bioscience, he was interested in how the human __39__works and looked for ways to help it work better. For example, Ben’s older brother John __40__ from kidney stones(肾结石) and Ben wanted to help him feel better. Ben developed a __41__ urinary catheter(导尿管) that appears to have been the first one produced in America.

During Ben’s life time, he made eight __42__ across the Atlantic Ocean. These __43__ journeys gave him a lot of time to learn about __44__ and how they worked. As early as 1784, Franklin suggested dividing ships’ holds(船舱) __45__watertight compartments(水密室) so that if a __46__ occurred in one compartment, the water would not spread throughout the hold __47__ sink the ship.

Everyone knows the story of Ben’s famous __48__ flight. Although he made __49__ discoveries and advancements, Ben did not “invent” electricity. He did, however, invented the lightning rod which __50__ buildings and ships from lightning damage.

31. A. made        B. got            C. took            D. had

32. A. devotion      B. interest         C. curiosity        D. imagination

33. A. smell        B. taste            C. hearing         D. sight

34. A. bored        B. tired            C. worried         D. exhausted

35. A. beside        B. front           C. near            D. close

36. A. chopped      B. broken          C. cut             D. fixed

37. A. make        B. call            C. create           D. find

38. A. Now that     B. Even though     C. As if           D. Except that

39. A. blood        B. brain            C. body          D. heart

40. A. suffered      B. stood            C. escaped        D. hurt

41. A. flexible       B. moveable        C. reliable        D. changeable

42. A. visits         B. flights           C. trips           D. voyages

43. A. interesting     B. dull             C. lonely         D. long

44. A. journeys      B. oceans           C. ships          D. sailors

45. A. off           B. with            C. into           D. from

46. A. fire          B. crack             C. disease       D. typhoon

47. A. and          B. but              C. so            D. until

48. A. kite          B. bird             C. plane          D. balloon

49. A. necessary     B. important         C. unbelievable    D. imperfect

50. A. separated     B. guarded          C. protected      D. removed