2.Science can't explain the power of pets,but many studies have shown that the company of pets can help lower blood pressure (血壓) 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 2002study by Karen Allen of the State University of New York measured stress (緊張) levels and blood pressure in people-half of them pet owners-while they performed 5minutes of mental arithmetic (算術(shù)) 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 (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 Northwestern Memorial Hospital spent a year studying 36fat people and their equally fat dogs on diet-and-exercise programs; a separate group of 56people without pets were put on a diet program.On average,people lost about 11pounds,or 5% of their body weight.Their dogs did even better,losing an average of 12pounds,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?A
A.What pets bring to their owners.
B.How pets help people calm down.
C.People's opinions of keeping pets.
D.Pet's value in medical research.
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 completing 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.

分析 本文是一篇科教類閱讀.文章主要介紹了寵物對我們的影響.有寵物的陪伴可以幫助降低血壓,提高心臟病恢復(fù)的機(jī)會,并且可以感到放松,擁有一只寵物可以改變你的飲食習(xí)慣,可以使你得到更多的訓(xùn)練.

解答 28-31 AACA
28.A.主旨大意題.縱覽全文并根據(jù)"Science can't explain the power of pets,but many studies have shown that the company of pets can help lower blood pressure (血壓) and raise chances of recovering from a heart attack,reduce loneliness and spread all-round good cheer."可知文章主要講述了寵物給它們的主人帶來的好處.故選A.
29.A.細(xì)節(jié)理解題.根據(jù)"but many studies have shown that the company of pets can help lower blood pressure (血壓) and raise chances of recovering from a heart attack,reduce loneliness and spread all-round good cheer."可知患心臟病的人如果有一個寵物他就會有更好的機(jī)會獲得健康.故選A.
30.C.細(xì)節(jié)理解題.根據(jù)"It seems people feel more relaxed (放松)around pets,says Allen,who thinks it may be because pets don't judge."可知面對壓力時他們做的更好是因?yàn)樗麄儧]那么緊張.故選C.
31.A.推理判斷題.根據(jù)"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."可知養(yǎng)狗的人會做更多的運(yùn)動.故選A.

點(diǎn)評 本文是一篇科教類閱讀.此類題型主要考查學(xué)生的細(xì)節(jié)理解和推理判斷能力.細(xì)節(jié)理解題是針對文中某個細(xì)節(jié)、某句話或某部分具體內(nèi)容設(shè)置問題,所以在做細(xì)節(jié)理解題時要結(jié)合原文和提干有針對性的找出相關(guān)語句進(jìn)行仔細(xì)分析,再結(jié)合選項(xiàng)選出正確答案.在做推理判斷題時不要以個人的主觀想象代替文章的事實(shí),要聯(lián)系上下文根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷.在做主旨大意題時考生首先要仔細(xì)閱讀短文,完整了解信息,準(zhǔn)確把握作者觀點(diǎn),確定主旨.

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