New research from the United States suggests that the millennia-old therapy of yoga could benefit millions of people who suffe

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问题     New research from the United States suggests that the
millennia-old therapy of yoga could benefit millions of people who
suffered from back problems. In an article published in the Annals【M1】______
of Internal Medicine on December 20, researchers concluded that
yoga was a effective treatment for back pain than conventional【M2】______
therapy. A study conducting at the Group Health Cooperative in【M3】______
Washington State required 101 adults to follow a choice of
remedial treatments—a 12-week course in yoga, 12 weeks of
standard therapeutic exercise or the same period following
instructions in the self-help book. The results showed yoga both【M4】______
expedited relief from pain and had longer lasting benefits. Lead
researcher Dr. Karen Sherman said this was because
"mind and body effects" were in the collusion.【M5】______
    The article states that: "Most treatments for chronic low back
pain have modest efficacy at best. Exercise is one of the few
proven treatments... however, its effects are often small, and no
form has been shown to be clear better than another. Yoga, which【M6】______
often couples physical exercise with breathing, is a popular
alternative form of ’mind-body’ therapy. It may benefit patients
with back pain simply because it involves exercise or because its【M7】______
effects on mental focus. We found no published studies in western
biomedical literacy that evaluated yoga for chronic low back pain;【M8】______
moreover, we designed a clinical trial to evaluate its【M9】______
effectiveness." Millions of people worldwide swear at yoga to【M10】______
improve their mental and physical health.
【M1】

选项

答案suffered一suffer

解析 语法错误。who引导的定语从句修饰先行词people。整句的时态是一般现在时,主句中的谓语动词suggests已明确表示,且此处的定语没有特指过去的含义,因此定语从句中的时态也应该跟主句一致。本句的含义为“美国一项新的研究表明,有千年历史的瑜伽治疗法是一个能惠及上百万背部伤痛患者的治疗方法。”
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