Reilly from the University of Glasgow and-|||-colleagues noted in the British Medical Journal.Given the-|||-general lack of evidence on appropriate w to prevent-|||-obesity in this age group, Reilly`s team enrolled 545-|||-children from 36 nursery schools in the "Movement and-|||-Activity Glasgow Interven (干涉)inChildren"or MAGIC-|||-trial.-|||-The trial was specificelly designed to see if an-|||-increase in activity could reduce body mass index(体质指-|||-数).Each week for 24 weeks roughly half of the-|||-preschoolers, who were an average of 4.2 years old at-|||-entry, participated in th 30-minute active play while at-|||-nursery school and their parents were encouraged to-|||-increase the children`s activity levels at home.The other-|||-half of the children,serving as controls(对照组),followed-|||-their usual nursery school schedule.-|||-According to the researchers, the physical activity-|||-intervention had no significant effect on body mass index-|||-or on measures of physical activity and inactive behaviors-|||-of the children.-|||-However, compared with control children,-|||-intervention children sho greater gains in movement-|||-skills, which, the researchers say,may foster(助长)-|||-confidence in physical abilty, perhaps increasin the-|||-probability of future participation in physical activity or-|||-sports.-|||-Summing up, Reilly and colleagues suggest that-|||-`successful interventions prevent obesity in early-|||-childhood may require changes not just at nursery,school-|||-and home,but in the wider environment. Changes in other-|||-behaviors, including diet may also be necessary."-|||-There are 2 passages in this section Each passage is followed by some questions or unfinushed statements For each of them there are four choices marked A)B),C)and-|||-36 According to the passage, what should people do to prevent-|||-obesity?-|||-A)Have confidence in preventing obesity.-|||-B) Limit the children`s activity level at home.-|||-C)Keep the same diet.-|||-D)Play actively while at nursery school and keep a healthy diet-|||-According to the researchers.the physical activity intervention is-|||-__-|||-A) of little effect on increasing confidence in physical ability-|||-B) improving the likelihood of future participation in sports-|||-C)changing many children`s inactive behav-|||-D)of great effect on reducing body mass index-|||-Which of the following is true according to the passage?-|||-A) Successful interventio to prevent obestty in early childhood-|||-may require changes in many aspects of life.-|||-B)An increase in activity could reduce body mass index-|||-C)The appropriate ways to prevent obesity at preschool age have-|||-not been discovered-|||-D) Obesity prevention and a healthier lifestyle have no direct-|||-relationship-|||-What is this passage mainly about?-|||-A) Obesity is very common among preschool children-|||-B) Exercise alone is unlikely to prevent obesity-|||-C)How to balance the physical actmuty and schoolwiork-|||-D)How to arrange the children`s usual nursery school schedule-|||-40 According to the author,which of the following measures is-|||-crucial to prevent obesity for preschool children?-|||-A) Combining increased physical sctivity with other lifestyle-|||-changes.-|||-B) Increasing exercises at home.-|||-C)Participating in the Glasgow Intervention Movement-|||-D) Increasing exercise at nursery school

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