A、Pets manage to make their owners more healthy. B、Pets spread many kinds of disease to men. C、Pet owners enjoy better health be

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问题  
New research from Australia shows that pets are good for your health. The findings of this new study suggest that people who have pets are at less risk from heart disease than those who do not.
    The new research was carried out over three years and examined 3,000 people. They took tests that measured a variety of different factors known to be involved in heart disease--blood pressure and blood levels. Also, people were asked about their lifestyles. The 800 people who owned pets had low levels on each of the factors measured than those who did not own pets. The study ’also showed that it did not matter what kind of pet was owned--a cat was as good as a dog— so the benefits could not be attributed to the exercises involved in walking a dog.
    The question is just how pets manage to make their owners more healthy. The obvious answer is that they make their owners feel more relaxed and happy. The Australian scientists who organized this study commented that if a new drug was available that was as effective as simply having a pet, then this drug would undoubtedly be considered a breakthrough in the control of heart disease.

选项 A、Pets manage to make their owners more healthy.
B、Pets spread many kinds of disease to men.
C、Pet owners enjoy better health because of exercises.
D、Pets can sometimes cause high blood pressure in man.

答案A

解析 推理判断题。短文在开篇提到“... pets are good for your health.... people who have pets are less risk from heart disease than.those who do not.”因此可以得出本文的主要内容是关于宠物对人体健康的积极影响。B、D两项是关于宠物的消极作用,故排除;C项提供的原因不正确,故排除。
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