Question

7．Science can't explain the power of pets，but many studies have shown that the company of pets can help lower blood pressure （血压） and raise chances of recovering from a heart attack，reduce loneliness and spread all-round good cheer．
Any owner will tell you how much joy a pet brings．For some，an animal provides more comfort than a husband/wife．A  study by Karen Allen of the State University of New York measured stress （紧张） levels and blood pressure in people-half of them pet owners-while they performed 5 minutes of mental arithmetic （算术） or held a hand in ice water．Subjects completed the tasks alone，with a husband/wife，a close friend or with a pet．People with pets did it best．Those tested with their animal friends had smaller change in blood pressure and returned most quickly to baseline heart rates．With pets in the room，people also made fewer math mistakes than when doing in front of other companions．It seems people feel more relaxed  around pets，says Allen，who thinks it may be because pets don't judge．
A study reported last fall suggests that having a pet dog not only raises your spirits but may also have an effect on your eating habits．Researchers at Northwestern Memorial Hospital spent a year studying 36 fat people and their equally fat dogs on diet-and-exercise programs； a separate group of 56 people without pets were put on a diet program．On average，people lost about I1 pounds，or 5% of their body weight．Their dogs did even better，losing an average of 12 pounds，more than 15% of their body weight．Dog owners didn't lose any more weight than those without dogs but，say researchers，got more exercise overall-mostly with their dogs-and found it worth doing．
28．What does the text mainly discuss？D
A．Pets'value in medical research．
B．How pets help people calm down．
C．People's opinions of keeping pets．
D．What pets bring to their owners．
29．We learn from the text that a person with heart disease has a better chance of getting
well ifA．
A．he has a pet companion
B．he has less stress of work
C．he often does mental arithmetic
D．he is taken care of by his family
30．According to Allen，why did the people do better with pets around when doing stressful tasks？C
A．They have lower blood pressure．
B．They become more patient．
C．They are less nervous．
D．They are in higher spirits．
31．The research mentioned in the last paragraph reports thatA．
A．people with dogs did more exercise
B．dogs lost the same weight as people did
C．dogs liked exercise much more than people did
D．people without dogs found the program unhelpful．

Answer 1

分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了关于养宠物的好处，科学不能解释宠物的力量，但很多研究都表明有了宠物的陪伴（company of pets），可以帮我们降低血压和恢复心脏功能，并且减少我们的孤独感．宠物不仅能调节你的精神而且还能改善你的饮食习惯．

解答 28．D．主旨大意题．根据首段Science can't explain the power of pets，but many studies have shown that the company of pets can help lower blood pressure （血压） and raise chances of recovering from a heart attack，reduce loneliness and spread all-round good cheer，可知很多研究表明，宠物可以降低血压，提高、心脏病恢复的几率，减少孤独感和传播快乐．故选D．
29．A．细节理解题．根据the company of pets can help lower blood pressure and raise chances of recovering from a heart attack，reduce loneliness and spread all-round good cheer．有宠物陪伴可以降低血压，提高、心脏病恢复的几率，减少孤独感和传播快乐．故选 A．
30．C．细节理解题．根据It seems people feel more relaxed around pets，和宠物在一起人们感到更加的放松．故选C．
31．A．细节理解题．根据Dog owners didn't lose any more weight than those without dogs but，say researchers，got more exercise overall-mostly with their dogs-and found it worth doing．虽然养狗的主人的体重没有多大变化，但是却比没有养狗的人得到更多的锻炼，因为是和他们的狗在一起，他们认为很值得．故选A．

点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．