1．You know the saying"You're as young as you feel．"Well，there may be some truth t，according to that，according to researchers at Harvard and the Massachusetts Institute of Technology．
Ellen Langer，a Harvard psychologist who studies how the mind influences the body，and colleagues reviewed the scientific literature for evidence that a person's perception of their age might influence their health．They published their results in the journal Perspectives on Psychological Science．
In one study that Langer led，47 women had their hair done．The women who thought their new hairdos made them look younger did look younger to objective observers，who were shown before-and-after pictures．The women who thought they looked younger also showed a drop in blood pressure．Another study involving 4，421 men found that thise who became bald（秃顶）at a relatively young age were more likely to get cancer and heart disease than men who did not．Similarly，another study involving 2，017men found that those who lost their hair early were more likely to develop heart disease．"We believe that the feelings associated with being older than one's real age account for some of these health outcomes，"the researchers wrote．
The researchers also described studies that found that women who had children later in life were more likely to be healthier and live longer than those who had children early，which they attributed to the fact that these mothers tend to spend more time with younger women．Similarly，people who marry younger partners tend to live longer than those who marry older partners，according to other studies．
Taken together，the research"supports the general mind-body hypothesis（假说）that when a younger mind is prepared，a younger body can accompany it．"While the mechanism remains unclear，the researchers figured that suggestions associated with aging can"make one unconsciously or consciously aware of old age and set in motion a series of physiological processes that can have real effects on short-term and long-term health．"
28．The underlined word"perception"in Paragraph 2meansA．
A．view
B．appearance
C．influence
D．creation
29．Which of the following statements is true according to Paragraph 3？B
A．Blood pressure is highly related to hairdos．
B．Feeling older than real age may be tied to health problems．
C．Getting cancer or heart disease is the cause of hair losing．
D．The women who love hairdos look younger than those don't．
30．It can be inferred from Paragraph 4thatC．
A．a younger mother is more likely to live longer
B．the younger one of a couple lives much longer
C．often staying with younger people can benefit people's health
D．people who want to live longer need to marry young
31．The passage mainly tells us thatD．
A．Getting bald too early is not good to marry young
B．Women had better give birth later in their life
C．Feeling younger to a couple is very important to their health
D．People's feeling of their age may have an effect on their own health．
分析 文章讲述了一个人的心态和自己的健康是有很大关系的，并通过一些实验论证心态的重要性．
解答 28．A；词意猜测题．根据第二段colleagues reviewed the scientific literature for evidence that a person's perception of their age might influence their health．得知，他的同事们重新看了科学的证据，一个人的观点认为年龄会影响他们的健康，所以此处perception 指观点，看法，故选A．
29．B；细节理解题．第三段主要是Langer做的实验过程，We believe that the feelings associated with being older than one's real age account for some of these health outcomes结果表明一个人认为自己比实际年龄要大，往往会造成健康上的问题，故选B
30．C； 推理判断题．在第三段最后people who marry younger partners tend to live longer than those who marry older partners，according to other studies．和比自己年轻的人结婚会活的时间更久，故选C．
31．D；主旨大意题．通过第一、二段a person's perception of their age might influence their health可知一个人的态度和健康有很大关系，紧接着在第三段给出了具体的实验过程并得出结论，故选D．
点评 本文考察学生的细节理解和推断能力以及细心程度，只要抓住文章的关键词，采用寻读的方法查找细节，就能找到正确答案．
