"Of course everyone enjoys some extra treats during the Christmas holidays, so we don't want to ban beef pies and wine; but it's a good time to think about taking up some healthy habits for 2015."

　　"Leading a healthy lifestyle can't guarantee someone won't get cancer, but we can stack_the_odds_in_our_favor by taking positive steps now that will help decrease our cancer risk in future."

　　Public Health England says a healthy lifestyle can play an important role in reducing cancer risk.It says campaigns such as Smokefree, Dry January and Change4Life Sugar Swaps all aim to raise public awareness.It's important that we continue making progress to detect cancer earlier and improve treatments, but helping people understand how they can reduce their risk of developing cancer in the first place remains crucial in dealing with cancer.

语篇解读：健康的生活方式非常重要，因为英国的一项调查显示，如果人们拥有健康的生活方式，那么十分之四的癌症是可以避免的。

　　5．What is the third biggest risk factor causing cancer from 2007 to 2011?

　　A．Obesity.　　　　　　 B．Alcohol intake.

　　C．Unhealthy diets. D．Physical inactivity.

　　解析：选A　细节理解题。根据第三段可知，致癌因素中排名第一的是吸烟，第二是不健康的饮食，第三是肥胖，第四是饮酒。

　　6．According to Professor Max Parkin, ________.

　　A．it's OK to drink wine during festivals

　　B．the reason for cancer is still unclear now

　　C．unhealthy food should be completely banned

　　D．a healthy lifestyle will protect us from cancer

　　解析：选A　细节理解题。根据第五段可知，Max Parkin教授虽然极力倡导健康的生活方式，但他认为节假日期间少量喝酒还是可以的。

　　7．The underlined words "stack the odds in our favor" in Paragraph 6 probably mean ________.

　　A．change our lives B．gain more wealth

　　C．avoid becoming ill D．improve the situation

解析：选D　词义猜测题。根据语境可知，健康的生活方式虽然不能确保我们不得癌症，但是积极地采取可以帮助我们减少患癌风险的措施能使"情况对我们有利"，因此D项符合语境。