Question

【题目】 【1】 In fact, the idea of walking at least 10,000 steps a day for health goes back decades to a marketing (推销) campaign (计步器) launched in Japan to promote a pedometer. And, in subsequent years, it was adopted in the US as a goal to promote good health.【2】

“The original basis of the number was not scientifically determined,” says researcher I-Min Lee of Brigham and Women’s Hospital.

She was curious to know how many steps you need to take a day to maintain good health and live a long life, so she and her colleagues designed a study that included about 17,000 older women. Their average age was 72.【3】

It turns out that women who took about 4,000 steps per day got a boost in longevity(长寿), compared with women who took fewer steps.【4】

In fact, women who took 4,400 steps per day, on average, were about 40 percent less likely to die during the follow-up period of about four years compared with women who took 2,700 steps. The findings were published Wednesday in JAMA Internal Medicine.

Another surprise: The benefits of walking maxed out at about 7,500 steps.【5】

A.The women all agreed to clip on wearable devices to track their steps as they went about their day-to-day activities.

B.Walking 10,000 steps a day can make a lot of people happy.

C.It’s nothing unusual to walk 10,000 steps a day.

D.“It was sort of surprising,” Lee says.

E.In other words, women who walked more than 7,500 steps per day saw no additional boost in longevity.

F.There is no direct relationship between life span and steps.

G.It’s often the default setting on fitness trackers, but what’s it really based on?

Answer 1

【答案】

【1】C

【2】G

【3】A

【4】D

【5】E

【解析】

这是一篇说明文。文章主要说明了每天走一万步被美国采纳，作为促进健康的目标，但是研究人员通过研究发现，每天走四千步的女性更加长寿，而且每天步行超过7500步的女性并不会增加寿命。

【1】

根据后文In fact, the idea of walking at least 10,000 steps a day for health goes back decades to a marketing (推销) campaign (计步器) launched in Japan to promote a pedometer.可知事实上，为了健康，每天至少走一万步的想法可以追溯到几十年前日本发起的一项推广计步器的营销活动。由此可知，每天走一万步的想法并没有什么不寻常，因为日本几十年前就有了。故C选项“每天走一万步没什么不寻常的”符合上下文语境，故选C。

【2】

根据下文“The original basis of the number was not scientifically determined,” says researcher I-Min Lee of Brigham and Women’s Hospital.可知布莱根妇女医院的研究人员I-Min Lee说:“这个数字的最初依据并不是科学确定的。”由此可知，本句旨在提出“每天走一万步的科学依据是什么”的问题。故G选项“这通常是健身追踪器的默认设置，但它真正的依据是什么？”符合上下文语境，故选G。

【3】

根据上文She was curious to know how many steps you need to take a day to maintain good health and live a long life, so she and her colleagues designed a study that included about 17,000 older women. Their average age was 72.可知她很想知道每天需要走多少步才能保持健康和长寿，所以她和她的同事设计了一项研究，其中包括了大约1.7万名老年女性。他们的平均年龄是72岁。由此可知，本句承接上文继续说明他们的研究过程：他们让这些女性穿戴上设备来跟踪他们的日常生活。故A选项“这些女性都同意佩戴可穿戴设备来跟踪她们日常活动的步态”符合上下文语境，故选A。

【4】

根据上文It turns out that women who took about 4,000 steps per day got a boost in longevity(长寿), compared with women who took fewer steps.可知事实证明，每天走4000步左右的女性比少走4000步的女性更长寿。由此可知，每天走四千步的女性更加长寿，而不是一万步，这一结果有点令人吃惊。故D选项“这有点令人吃惊，李说”符合上下文语境，故选D。

【5】

根据上文Another surprise: The benefits of walking maxed out at about 7,500 steps.可知另一个让人惊讶的是：步行的最大好处约为7500步。由此可知，本句承接上文继续解释说明，“步行的最大好处约为7500步”的意思是“每天步行超过7500步的女性并不会增加寿命”。故E选项“换句话说，每天步行超过7500步的女性并不会增加寿命”符合上下文语境，故选E。