四级听力		四级作文		四级阅读		四级翻译		四级综合点评
	六级听力		六级作文		六级阅读		六级翻译		六级综合点评

　　2016年6月18日的大学英语四六级考试正式拉开序幕，新东方网四六级频道第一时间为广大考生带来四六级考试真题答案以及解析，届时新东方多位知名教师也将第一时间对此次四六级考试相关真题做出详细解析，敬请广大考生密切关注新东方网四六级频道以及2016年6月英语四六级真题解析专题。

　　微博微信平台，此次的四六级真题解析活动也将第一时间开展，广大考生可随时@新东方网四六级微博，与线上老师以及考生随时互动答疑，最后新东方网四六级频道祝广大考生在此次考试中取得优异成绩! 

　　Lecture 3

　　A new study has failed to find any conclusive evidence that lifestyle changes can prevent cognitive decline in older adults.

　　Still there are still good reasons to make positive changes in how we live and what we eat as we age.

　　Cognitive decline is the loss of ability to learn new skills, or recall words, names, and faces that is most common as we age. To reduce or avoid it, researchers have examined the effect of smoking, diet, brain-challenging games, exercise and other strategies.

　　Researchers at Duke University scrutinized more than 160 published studies and found an absence of strong evidence that any of these approaches can make a big difference.

　　Co-author James Burke helped design the study. "In the observational studies we found that some of the B vitamins were beneficial." said. "Exercise, diet, cognitive stimulation showed some positive effects, although the evidence was not so strong that we could actually consider these firmly established."

　　Some previous studies have suggested that challenging your brain with mentally stimulating activities might help. And Burke said that actually does seem to help, based on randomized studies - the researcher's gold standard.

　　"Cognitive stimulation is one of the areas where we did find some benefit. The exact type of stimulation that an individual uses is not as important as being intellectually engaged,".

　　The expert review also found insufficient evidence to recommend any drugs or dietary supplements that could prevent or slow cognitive decline.

　　However, given that there is at least some evidence for positive effects from some of these lifestyle changes, plus other benefits apparently unrelated to cognitive decline, Burke offered some recommendations.

　　"I think that by having people adopt a healthy lifestyle, both from a medical standpoint as well as nutritional and cognitive stimulation standpoint, that we can reduce the incidence of cognitive decline, which will be proof that these factors are, in fact, important."

　　James Burke of Duke University is one of the authors of a study reviewing previous research on cognitive decline. The paper is published online by the Annals of Internal Medicine.

　　Q23. According to the speaker, what might be a symptom of cognitive decline in older adult?

　　Q24. According to James Burke, what does seem to help reduce cognitive decline?

　　Q25. What did James Burke recommend to reduce the incidence of cognitive decline?

　　》》更多精彩冲分课程推荐：

　　四级基础强化冲刺套餐班 | 四级基础45人精品特训班

　　六级基础强化冲刺套餐班 | 六级强化45人精品特训班 

　　考后关注：

　　2016年6月英语四六级考试各题型科目解析

　　大学英语四六级证书在求职中有什么作用?

　　2016年6月英语四六级成绩查询常见问题

　　2016年6月英语四六级考试通过分数线是多少?

　　2016年6月英语四六级成绩单什么时间发放?

(责任编辑：马荟)