【正文】
a separate group of 56 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 than 15% of their body weight. Dog owners didn39。 first 2. It’s a mon ______ to drive on the left in Britain. A. sense B. practice C. rule D. reality 3. Would you like to go to see the new film tonight? “ The Forest Gump”? I happen _______ it twice. A. seeing B. to see C to have seen D. having seen 4. Alice, why are you still reading? It’s high time that you ___ ____ to bed. Yes, Mum. But you know, it’s the fourth time that you _______to my room tonight. A. went。 came B. go。t lose any more weight than those without dogs but, say researchers, got more exercise overallmostly with their dogs— and found it worth doing. 67. What does the text mainly discuss? A. What pets bring to their owners. B. How pets help people calm down. C. People39。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 dietandexercise programs。 the first C. the fourth one, first D. fourth one。 e C. went。s opinions of keeping pets. D. Pet39。t explain the power of pets, but many studies have shown that the pany of pets can help lower blood pressure (血壓 ) and raise chances of recovering from a heart attack, reduce loneliness and spread allround good cheer. An