Working at a desk all day may not be as bad for your health as sitting in front of a television after work. That is a finding of a new study done in the United States. It also suggests that not all forms of sitting are equally bad. Jeanette Garcia led the study. Garcia works as a researcher at the University of Central Florida in Orlando. "We've been hearing more and more about how sitting is the new smoking," she said. She added that other evidence suggests a relationship between health problems and time spent sitting. "However, it's been unclear whether all sitting is created equal, suggesting that as long as you reduce any type of sitting, then that's helpful in improving health," she added. "This study suggests that this may not be the case, and that we should focus more on leisure(休闲)time siting, mainly television viewing time, rather than sitting, in general.”The study followed close to 3,600 African-American adults. Almost one-third of them watched television, or TV, for more than four hours a day. A little more than one-third of the subjects spent between two and four hours a day sitting in front of the TV. The remaining third watched TV for less than two hours a day. Researchers followed the group for an average of 8.4 years. During the study, 205 of the subjects died and 129 others suffered a heart attack or stroke. Compared to people who watched less than two hours of television daily, those who spent more than four hours in front of the TV were 49 percent more likely to die or have a heart attack or stroke. But the undesirable health effects of TV appeared to be limited to adults who failed to get the recommended amount of weekly exercise. That is around 150 minutes of moderate(普通的)physical activity or 75 minutes of vigorous exercise every week. Lin Yang is a researcher at the University of Calgary in Canada. She says it is possible that sitting in front of the TV might be worse than sitting at a desk because people snack while they are watching TV. Yang explained that “the evidence on TV viewing and health risks is strong," even if the exact biological causes are unclear.【小题1】What does Garcia probably agree with?A．Less sitting，better health.B．All kinds of sitting create the equal effects.C．We should focus more on time sitting.D．Sitting is as harmful as the new smoking.【小题2】What can you know about the participants in the study?A．205 participants died of a heart attack or stroke.B．3,600American-Afican adults were followed closely.C．Participants were followed for an average of more than 8 years.D．Over 1200 participants watched TV for more than 4 hours a day.【小题3】Who were more likely affected by undesirable health effects of TV?A．Those who watched less than two hours of television daily.B．Those who spent more than four hours in front of the TV.C．Those who spend 150 minutes on moderate physical activity.D．Those who didn't get the recommended amount of weekly exercise.【小题4】Which is the best title of the passage?A．Why sitting is the new smoking?B．All kinds of sitting are equally bad?C．More exercise produces good health?D．Why TV viewing time is bad for health?
Working at a desk all day may not be as bad for your health as sitting in front of a television after work. That is a finding of a new study done in the United States. It also suggests that not all forms of sitting are equally bad.
Jeanette Garcia led the study. Garcia works as a researcher at the University of Central Florida in Orlando. "We've been hearing more and more about how sitting is the new smoking," she said. She added that other evidence suggests a relationship between health problems and time spent sitting. "However, it's been unclear whether all sitting is created equal, suggesting that as long as you reduce any type of sitting, then that's helpful in improving health," she added. "This study suggests that this may not be the case, and that we should focus more on leisure(休闲)time siting, mainly television viewing time, rather than sitting, in general.”
The study followed close to 3,600 African-American adults. Almost one-third of them watched television, or TV, for more than four hours a day. A little more than one-third of the subjects spent between two and four hours a day sitting in front of the TV. The remaining third watched TV for less than two hours a day. Researchers followed the group for an average of 8.4 years. During the study, 205 of the subjects died and 129 others suffered a heart attack or stroke.
Compared to people who watched less than two hours of television daily, those who spent more than four hours in front of the TV were 49 percent more likely to die or have a heart attack or stroke. But the undesirable health effects of TV appeared to be limited to adults who failed to get the recommended amount of weekly exercise. That is around 150 minutes of moderate(普通的)physical activity or 75 minutes of vigorous exercise every week.
Lin Yang is a researcher at the University of Calgary in Canada. She says it is possible that sitting in front of the TV might be worse than sitting at a desk because people snack while they are watching TV. Yang explained that “the evidence on TV viewing and health risks is strong," even if the exact biological causes are unclear.
【小题1】What does Garcia probably agree with?| A．Less sitting，better health. |
| B．All kinds of sitting create the equal effects. |
| C．We should focus more on time sitting. |
| D．Sitting is as harmful as the new smoking. |
| A．205 participants died of a heart attack or stroke. |
| B．3,600American-Afican adults were followed closely. |
| C．Participants were followed for an average of more than 8 years. |
| D．Over 1200 participants watched TV for more than 4 hours a day. |
| A．Those who watched less than two hours of television daily. |
| B．Those who spent more than four hours in front of the TV. |
| C．Those who spend 150 minutes on moderate physical activity. |
| D．Those who didn't get the recommended amount of weekly exercise. |
| A．Why sitting is the new smoking? |
| B．All kinds of sitting are equally bad? |
| C．More exercise produces good health? |
| D．Why TV viewing time is bad for health? |
题目解答
答案
解析
- 考查要点：本题主要考查学生对文章细节的理解、数据信息的提取能力，以及根据上下文推断作者观点的能力。题目涉及对科学研究结论的分析，需结合具体数据和逻辑关系作答。
- 解题核心：
- 小题1：需抓住Garcia的核心观点，即“并非所有久坐行为对健康的影响相同”，重点关注她对“减少特定类型久坐行为”的建议。
- 小题2：需准确提取实验数据，注意文章中明确提到的参与人数、随访时间等关键信息。
- 小题3：需理解因果关系，明确不良健康影响的触发条件（未达到推荐运动量）。
- 小题4：需概括文章核心结论，即“不同形式的久坐对健康的影响不同”。
第（1）题
关键句：Garcia提到“not all sitting is created equal”（并非所有久坐行为的影响相同），并建议“应更关注休闲时间的久坐（如看电视）”。
- 选项A（Less sitting，better health）符合她强调“减少特定类型久坐行为有益健康”的观点。
- 选项D（Sitting is as harmful as the new smoking）是Garcia提到的比喻，但根据后文她明确反对“所有久坐行为等价”，因此排除。
第（2）题
关键数据：
- 总参与人数：接近3,600人（文中明确为“3,600 African-American adults”）。
- 随访时间：平均8.4年（“8.4 years”）。
- 选项C（followed for an average of more than 8 years）与数据一致。
- 选项D（超过1200人每天看超过4小时电视）错误，文中“超过三分之一”是1200人，但总人数为3600，因此“超过三分之一”不超过1200人。
第（3）题
关键句：不良健康影响“仅限于未达到推荐运动量的参与者”（“adults who failed to get the recommended amount of weekly exercise”）。
- 选项D（未达到推荐运动量）直接对应这一条件，因此正确。
第（4）题
核心结论：文章指出“不同形式的久坐对健康的影响不同”，特别是看电视时间更危险。
- 选项B（All kinds of sitting are equally bad）最能概括这一对比，突出“并非所有久坐行为等价”。