（上海市六校2010届高三联考）

There is a close link between local climate and the occurrence or severity of some diseases and other threats to human health. Extreme temperatures can directly cause the __50____ of life. ___51___ several serious diseases appear only in warm areas. Finally, __52____ temperatures can increase air and water pollution, which __53____ harm human health. The most direct effect of ___54___ change would be the impact of hotter temperatures themselves. __55____ hot temperatures increase the number of people who die on a given day for many reasons: People with heart problems are ___56___ because their heart and blood vessels system must work harder to keep the body cool during hot weather. Heat exhaustion and some breathing problems increase. Higher air temperatures also increase the concentration of ozone （臭氧）at ground ___57___. The natural layer of ozone in the upper atmosphere blocks harmful ultraviolet (紫外线) radiation from reaching the earth’s surface; but in the lower atmosphere, ozone is a(n) ___58___ pollutant. Ozone damages lung cells, and causes particular problems for people with lung diseases. ___59___ modest exposure to ozone can cause healthy individuals to ___60___ chest pains and sickness.

____61__ -related deaths can be prevented by ___62___ measures to move people without proper protection to air-conditioned buildings, and by reducing the releasing of photochemical oxidants(光化氧化剂)which cause ground-level ozone. Many of the ___63___ of climate change on health could be avoided through maintenance of the strong public health programs to monitor, isolate, and treat the spread of infectious diseases and ___64___ to other health problems as they occur.

50. A. loss                    B. change                            C. regret                       D. failure

51. A. Moreover            B. However                  C. Hence                      D. Instead

52. A. local                   B. warm                       C. various                     D. moderate

53. A. or else                B. in turn                      C. in the way                D. for the moment

54. A. health                 B. diet                          C. climate                     D. time

55. A. Greatly               B. Considerably             C. Adequately                D. Extremely

56. A. much safer          B. hardly affected          C. ill-protected              D. barely attacked

57. A. base                   B. standard                   C. space                       D. level

58. A. harmful               B. beneficial                  C. infectious                 D. useful

59. A. But                     B. Even                        C. Thus                        D. Or

60. A. resist                  B. cure                         C. experience                D. reduce

61. A. Pollution             B. Exhaustion                C. Breathing                  D. Heat

62. A. emergency          B. urgency                    C. tension                     D. stress

63. A. signs                  B. impacts                    C. results                      D. causes

64. A. apply                  B. reply                        C. respond                    D. direct