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  study 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 5 minutes of mental arithmetic （算術） 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 本文屬于說明文閱讀，作者通過這篇文章主要向我們描述了關于養(yǎng)寵物的好處，科學不能解釋寵物的力量，但很多研究都表明有了寵物的陪伴（company of pets），可以幫我們降低血壓和恢復心臟功能，并且減少我們的孤獨感．寵物不僅能調節(jié)你的精神而且還能改善你的飲食習慣．

解答 28．D．主旨大意題．根據首段Science can't explain the power of pets，but many studies have shown that the company of pets can help lower blood pressure （血壓） 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，寵物可以降低血壓，提高、心臟病恢復的幾率，減少孤獨感和傳播快樂．故選D．
29．A．細節(jié)理解題．根據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．有寵物陪伴可以降低血壓，提高、心臟病恢復的幾率，減少孤獨感和傳播快樂．故選 A．
30．C．細節(jié)理解題．根據It seems people feel more relaxed around pets，和寵物在一起人們感到更加的放松．故選C．
31．A．細節(jié)理解題．根據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．雖然養(yǎng)狗的主人的體重沒有多大變化，但是卻比沒有養(yǎng)狗的人得到更多的鍛煉，因為是和他們的狗在一起，他們認為很值得．故選A．

點評 考察學生的細節(jié)理解和推理判斷能力，做細節(jié)理解題時一定要找到文章中的原句，和題干進行比較，再做出正確的選擇．在做推理判斷題不要以個人的主觀想象代替文章的事實，要根據文章事實進行合乎邏輯的推理判斷．