Science can't explain the power of pets, but many studies have shown that the company of

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 tall you how much joy a pet brings. For some, an animal provides more comfort than a husband/wife. A 2002 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 released (放松)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 Northwesterm Memorial Hospital spent a
Year studying 36 fat people and were put on a diet-and-exercise programs; a separate group of
56 fat people without pets were put on a diet program. On average，people lost about 11 pounds，
Or 5% of their body weight .Their dogs did even better，losing an average of 12 pounds，more then
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.
【小题1】 What does the text mainly discuss?A．What pets bring to their ownersB．How pets help people calm downC．people’s opinions of keeping petsD．Pet’s value in medical research【小题2】We learn from the text that a person with heart disease has a better chance of getting well if
A．he has a pet companionB．he has less stress of workC．he often dose mental arithmeticD．he is taken care of by his family【小题3】According to Allen, why did the people do better with pets around when facing stressful tasks?A．They have lower blood pressure.B．They become more patient.C．They are less nervous.D．They are in higher spirits.【小题4】 The research mentioned in the last paragraph reports thatA．people with dogs did more exerciseB．dogs lost the same weight as people didC．dogs liked exercise much more than people didD．people without dogs found the program unhelpful　

(答案→)　 解析：【小题1】A。考查主题大意。根据首段，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。【小题2】A。根据第一段，参见上题解析。【小题3】C。第二段最后一句话，和宠物在一起人们感到更加的放松。【小题4】A。最后一段最后一句话，虽然狗主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。

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