◎ 题干

The amount of usable water has always been of great interest in the world. ___36___ springs and streams sometimes means control,  particularly in the ___37___ areas like the desert. The control is possible even without possession of large areas of ___38___ land. In the early days of the American West,  gun fights were not ___39___ for the water resources (资源). And laws had to be ___40___ to protect the water rights of the ___41___ and the use of the water resources accordingly.
42___ is known to us all,  there is not ___43___ water in all places for everyone to use as much as he likes. Deciding on the ___44___ of water that will be used in any particular period
45___ careful planning,  so that people can manage and use water more ___46___. Farmers have to change their use of or demand for water ___47___ the water supply forecast (预报).
The ___48___ water supply forecast is based more on the water from the ___49___ than from the below. Interest is ___50___ in the ways to increase rainfall by man-made methods,  and to get water from the winter snow on mountain ___51___. With special equipment,  some scientists are studying the ways in which the mountain snow can be ___52___,  and with the help of a repeater station,  they send the ___53___ data (数据) to the base station. The operator at the base station can get the data at any time by ___54___ a button. In the near future,  the forecast and use of water ___55___ probably depend on the advance knowledge of snow on mountains,  not of water underground.
36. A. Using   B. Holding     C. Owning      D. Finding
37. A. dry       B. distant C. deserted     D. wild
38. A. fine      B. beautiful    C. rich    D. farming
39. A. unlawful      B. unacceptable      C. unpopular   D. uncommon
40. A. made    B. designed     C. signed D. written
41. A. winners       B. settlers       C. fighters      D. supporters
42. A. That     B. It C. What  D. As
43. A. plentiful      B. enough       C. any     D. much
44. A. type     B. quality       C. amount      D. level
45. A. requests       B. requires      C. means D. suggests
46. A. effectively   B. easily  C. conveniently      D. actively
47. A. leading to    B. due to C. owing to    D. according to
48. A. correct  B. further       C. average      D. early
49. A. clouds  B. sky     C. air      D. above
50. A. raising  B. rising  C. building     D. lasting
51. A. rocks    B. tips     C. cops    D. trees
52. A. taken care of       B. made use of       C. piled up     D. saved up
53. A. picked  B. produced    C. used    D. gathered
54. A. touching      B. knocking    C. pressing     D. turning
55. A. might   B. can     C. will    D. should
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