2. 外语
  3. [A]acknowledged[B]conducted[C]consideration[D]convert[E]establishment [F]involved[G]ranged[H]Relatively[I]reliable[J]responsible

[A]acknowledged[B]conducted[C]consideration[D]convert[E]establishment [F]involved[G]ranged[H]Relatively[I]reliable[J]responsible

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问题 [A]acknowledged[B]conducted[C]consideration[D]convert[E]establishment
[F]involved[G]ranged[H]Relatively[I]reliable[J]responsible
[K]significant[L]suggest[M]Tactfully[N]temperament[O]vulnerably
    A Dutch review of prior research reveals that the more physically active school-aged children are, the better they fare in the classroom.
    Most of the studies in the review had been【C1】______in the United States, while one came out of Canada and the other out of South Africa. The findings are published in the January issue of the Archives of Pediatrics & Adolescent Medicine. "We found strong evidence of a【C2】______ positive relationship between physical activity and academic performance," the researchers, led by Amika Singh of the Vrije Universiteit University Medical Center at the EMGO Institute for Health and Care Research in Amsterdam, the Netherlands, said in a journal news release. "The findings of one high-quality intervention study and one high-quality observational study【C3】______that being more physically active is positively related to improved academic performance in children," the authors noted. Fourteen studies were analyzed: they【C4】______ in size from about 50 participants to as many as 12,000 and【C5】______children between the ages of 6 and 18. The investigators noted that increases in blood and oxygen flow to the brain that accompanies exercise may play a role in improving classroom performance. The suggestion is that the dynamic prompts an increase in levels of hormones(荷尔蒙)【C6】______for reducing stress and boosting mood, while at the same time prompting the【C7】______ of new nerve cells and synapse(神经元) flexibility.
    The Dutch team cautioned, however, that more rigorous work is needed to confirm the connection. "【C8】______ few studies of high methodological quality have explored the relationship between physical activity and academic performance," they【C9】______. "More high-quality studies are needed on the dose-response relationship between physical activity and academic performance and on the explanatory mechanisms, using【C10】______ and valid measurement instruments to assess this relationship accurately."
【C4】
选项
答案G
解析 动词辨析题。分析句子结构可知，本句缺谓语动词，因此空格处应填动词，且该动词为不及物动词。结合空格后面部分句意“规模在50人至12，000人之间”可以判断，该动词与“范围”相关。备选动词中，ranged"包括，在某范围内变化"常与from…to…搭配，符合题意。
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