完形填空（20分）
Not so long ago, if you avoided drinking water during a workout（训练）, you were considered tough. Today, most experts 36 , you would be considered unintelligent.
Even in you don’t sweat much or feel 37 and even if there is a nice breeze, 38 experts say drinking water- or something 39 is necessary before, during and after all warmer-weather 40 .
Only a few years ago, many coaches 41 players from drinking anything during the game----they thought it was 42 for them to rinse(漱口) their mouths, 43 swallowing anything might slow them down.
Now, there’s 44 plenty of water on the sidelines for athletes to drink. The National Hockey League even 45 goalkeepers to put water bottles on top of their nets.
These new practices 46 be lost on the recreation(消遣) athlete. Some 47 advise you to drink about two cups of water 15 minutes or so after you 48 exercising and the same amount every 15 minutes. In some types of exercises-running, for example-others encourage drinking a cup or two of water 49 the workout.
Don’t drink any more, experts say too much fluid makes 50 and exercise uncomfortable. In 51 continuous hot-weather exercise, 52 can sweat and breathe away 1.8 kilograms of 53 an hour.
Drinking water does two things: restore some 54 and allow you to keep sweating so the skin can be kept 55 . Doctors say drinking six or eight cups a day can help digestion.
36. A. discover B. suggest C. agree D. fear
37. A. thirsty B. hungry C. hot D. tired
38. A. labour B. children C. water D. exercise
39. A. else B. instead C. fresh D. tasteful
40. A. seasons B. lessons C. days D. activities
41. A. excused B. discouraged C. prevented D. saved
42. A. possible B. unnecessary C. difficult D. right
43. A. but B. then C. therefore D. though
44. A. seldom B. forever C. usually D. sometimes
45. A. allows B. promises C. forbids D. guides
46. A. couldn’t B. wouldn’t C. shouldn’t D. mustn’t
47. A. teachers B. parents C. players D. doctors
48. A. stop B. start C. give up D. begin with
49. A. after B. before C. with D. from
50. A. walking B. breathing C. swallowing D. drinking
51. A. heavy B. easy C. pleasant D. everyday
52. A. a patient B. a drinker C. an athlete D. an expert
53. A. air B. atmosphere C. oxygen D. water
54. A. sweat B. weight C. breath D. height
55. A. warm B. strong C. cool D. safe