第三篇

　　A New Strategy to Overcome Breast Cancer

　　Post-menopausal(绝经后)womenwho walk for an hour a day can cut their chance of breast cancer significantly,a study has suggested. The report , which followed 73,000 women for 17 years, foundwalking for at least seven hours a week lowered the risk of the disease. TheAmerican Cancer Society team said this was the first time reduced risk wasspecifically linked to walking. UK experts said it was more evidence thatlifestyle influenced cancer risk.

　　A recent poll for the charity Ramblers aquarter of adults walk for no more than an hour a week, but being active isknown to reduce the risk of a number of cancers. This study, published inCancer Epidemiology, Biomarkers&Prevention, followed 73.615 women out of97,785 aged 50-74 who had been recruited by the American Cancer Society between1992 and 1993,so it could monitor the incidence of cancer in the group.

　　They were asked to complete questionnaires ontheir health and on how much time they were active and participating inactivities such as walking, swimming and aerobics(有氧运动)andhow much time they spent sitting watching television or reading. They completedthe same questionnaires at two-year intervals between 1997 and 2009.Of thewomen,47% said walking was their only recreational acivity. Those who walkedfor at least seven hours per week had a 14% lower risk of breast cancercompared to those who walked three or fewer hours per week.

　　Dr.Alpa Patel, a senior epidemiologist at theAmerican Cancer Society in Atlanta,Georgia,who led the study, said:”Given that more than 60% of women report some daily walking, promotingwalking as a healthy leisure-time activity could be an effective strategy forincreasing physical activity amongst post-menopausal women. We were pleased tofind that without any other recreational activity, just walking one hour a daywas associated with a lower risk of breast cancer in these women.””More strenuous(紧张的)and longer activitieslowered the risk even more.”

　　Baroness Delyth Morgan, chief executive ofBreast Cancer Campaign, said:”This study adds furtherevidence that our lifestyle choices can play a part in influencing the risk ofbreast cancer and even small changes incorporate into our normal day-to-dayactivity can make a difference.”

　　She added:”We knowthat the best weapon to overcoming breast cancer is the ability to stop itoccurring in the first place. The challenge now is how we turn these

　　findings into action and identify othersustainable lifestyle changes that will help us prevent breast cancer.”

　　41. All of the following factors relating tocancer risk were mentioned in the passage EXCEPT________

　　A. breathing exercise

　　B. regular walking

　　C. recreational activity

　　D. lifestyle choices

　　42. It can be inferred from Dr. Alpa Patel’s study that____.

　　A. women have fewer chances of physicalactivity

　　B. daily walking could cut the chance of breastcancer

　　C. leisure-time activity is not associatedwith cancer risk

　　D. walking is not recommended for women withbreast cancer

　　43. Dr. Alpa Patel was_____.

　　A. head of the survey study

　　B. chief editor of Cancer Epidemiology

　　C. chair of the American Cancer Society

　　D. chief executive of Breast Cancer Campaign

　　44. Which of the following statements is trueaccording to the passage?

　　A. Most women take walking as their onlyrecreational activity.

　　B. The study aims to track the healthconditions of its subjects.

　　C. Walking was the only recreationalacitivity for about half of the women

　　D. Irregular walking increased the risk ofbreast cancer in post-menopausal women

　　45. The word “sustainable”in the last paragraph is closest in meaning to

　　A. continuable

　　B. affordable

　　C. available

　　D. persistent