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请阅读下面短文,根据所提供的信息,回答五个问题,要求所写答案语法正确、信息完整切题。
Many people keep a record of how many steps they walk every day. Research suggests that 10,000 steps a day is enough for us to keep healthy and live longer. A new study says just 4,000 steps a day could be enough for us to live to an old age. Researchers went over 17 studies so that they could look at how far people walked during a week. They found that 4,000 steps per day lowered the risk of dying of heart diseases(疾病) and other life-threatening(危及生命的) conditions. The study said 4,000 steps is about a 30- to 45-minute walk, or about three to four kilometres.
The findings(结果) come out in a medical magazine. Researchers looked at exercise data from more than 225,000 adults worldwide over seven years. The adults had an average age of 64 and had different levels(水平) of health. The lead researcher said 4,000 steps was enough, but it wasn't a "magic number". He added that the more steps you take, the better you will feel. He also said walking an additional(额外的) 1,000 steps per day could lead to about a 15 percent lower risk of premature(提早的) death. Dr Smith, a researcher, advised people should take at least one walk every day.
46. How many steps a day is enough for us to live to an old age?
47. Why did researchers go over 17 studies?
48. Where can we read about the findings?
49. According to the passage, what will happen if you take more steps?
50. What was Dr Smith's advice?
B. 书面表达
Many people keep a record of how many steps they walk every day. Research suggests that 10,000 steps a day is enough for us to keep healthy and live longer. A new study says just 4,000 steps a day could be enough for us to live to an old age. Researchers went over 17 studies so that they could look at how far people walked during a week. They found that 4,000 steps per day lowered the risk of dying of heart diseases(疾病) and other life-threatening(危及生命的) conditions. The study said 4,000 steps is about a 30- to 45-minute walk, or about three to four kilometres.
The findings(结果) come out in a medical magazine. Researchers looked at exercise data from more than 225,000 adults worldwide over seven years. The adults had an average age of 64 and had different levels(水平) of health. The lead researcher said 4,000 steps was enough, but it wasn't a "magic number". He added that the more steps you take, the better you will feel. He also said walking an additional(额外的) 1,000 steps per day could lead to about a 15 percent lower risk of premature(提早的) death. Dr Smith, a researcher, advised people should take at least one walk every day.
46. How many steps a day is enough for us to live to an old age?
(Just) 4,000 steps. / 4,000.
47. Why did researchers go over 17 studies?
Because they could look at how far people walked during a week.
48. Where can we read about the findings?
In a medical magazine.
49. According to the passage, what will happen if you take more steps?
You will feel better.
50. What was Dr Smith's advice?
He advised people should take at least one walk every day. / Taking at least one walk every day. / To take at least one walk every day.
B. 书面表达
答案
46. (Just) 4,000 steps. / 4,000.
47. Because they could look at how far people walked during a week.
48. In a medical magazine.
49. You will feel better.
50. He advised people should take at least one walk every day. / Taking at least one walk every day. / To take at least one walk every day.
47. Because they could look at how far people walked during a week.
48. In a medical magazine.
49. You will feel better.
50. He advised people should take at least one walk every day. / Taking at least one walk every day. / To take at least one walk every day.
解析
【分析】
本题为英语阅读理解细节题，需根据每个问题的核心关键词定位原文对应内容，提取准确信息，整理成语法正确、切题的答语。解题思路：先明确每个问题的关键词，再回到原文找到包含该关键词的句子，最后从句子中提取符合要求的信息作答。
【解析】
46. 关键词为“live to an old age”，定位原文第一段“A new study says just 4,000 steps a day could be enough for us to live to an old age.”，提取对应信息即可。
47. 关键词为“go over 17 studies”，定位原文第一段“Researchers went over 17 studies so that they could look at how far people walked during a week.”，提取原因内容。
48. 关键词为“findings”，定位原文第二段“The findings(结果) come out in a medical magazine.”，提取结果发布的地点。
49. 关键词为“take more steps”，定位原文第二段“He added that the more steps you take, the better you will feel.”，提取对应的结果。
50. 关键词为“Dr Smith's advice”，定位原文第二段“Dr Smith, a researcher, advised people should take at least one walk every day.”，提取建议内容。
【答案】
46. (Just) 4,000 steps. / 4,000.
47. Because they could look at how far people walked during a week.
48. In a medical magazine.
49. You will feel better.
50. He advised people should take at least one walk every day. / Taking at least one walk every day. / To take at least one walk every day.
【知识点】
英语阅读理解、细节信息提取
【点评】
本题是基础的英语细节理解题，主要考查学生快速定位原文信息的能力，题目难度较低，只要能准确找到原文对应内容即可正确作答，适合巩固英语阅读基础。
【难度系数】
0.7
本题为英语阅读理解细节题，需根据每个问题的核心关键词定位原文对应内容，提取准确信息，整理成语法正确、切题的答语。解题思路：先明确每个问题的关键词，再回到原文找到包含该关键词的句子，最后从句子中提取符合要求的信息作答。
【解析】
46. 关键词为“live to an old age”，定位原文第一段“A new study says just 4,000 steps a day could be enough for us to live to an old age.”，提取对应信息即可。
47. 关键词为“go over 17 studies”，定位原文第一段“Researchers went over 17 studies so that they could look at how far people walked during a week.”，提取原因内容。
48. 关键词为“findings”，定位原文第二段“The findings(结果) come out in a medical magazine.”，提取结果发布的地点。
49. 关键词为“take more steps”，定位原文第二段“He added that the more steps you take, the better you will feel.”，提取对应的结果。
50. 关键词为“Dr Smith's advice”，定位原文第二段“Dr Smith, a researcher, advised people should take at least one walk every day.”，提取建议内容。
【答案】
46. (Just) 4,000 steps. / 4,000.
47. Because they could look at how far people walked during a week.
48. In a medical magazine.
49. You will feel better.
50. He advised people should take at least one walk every day. / Taking at least one walk every day. / To take at least one walk every day.
【知识点】
英语阅读理解、细节信息提取
【点评】
本题是基础的英语细节理解题，主要考查学生快速定位原文信息的能力，题目难度较低，只要能准确找到原文对应内容即可正确作答，适合巩固英语阅读基础。
【难度系数】
0.7
