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  3. Physical activity does the body good, and there’s growing evidence that it helps the brain too. Researchers in the Netherlands r

Physical activity does the body good, and there’s growing evidence that it helps the brain too. Researchers in the Netherlands r

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问题     Physical activity does the body good, and there’s growing evidence that it helps the brain too. Researchers in the Netherlands report that children who get more exercise, whether at school or on their own,【C1】______to have higher GPAs and better scores on standardized tests. In a【C2】______of 14 studies that looked at physical activity and academic【C3】______, investigators found that the more children moved, the better their grades were in school,【C4】______in the basic subjects of math, English and reading.
    The data will certainly fuel the ongoing debate over whether physical education classes should be cut as schools struggle to【C5】______on smaller budgets. The arguments against physical education have included concerns that gym time may be taking away from study time. With standardized test scores in the U. S.【C6】______in recent years, some administrators believe students need to spend more time in the classroom instead of on the playground. But as these findings show, exercise and academics may not be【C7】______exclusive. Physical activity can improve blood【C8】______to the brain, fueling memory, attention and creativity, which are【C9】______to learning. And exercise releases hormones that can improve【C10】______and relieve stress, which can also help learning. So while it may seem as if kids are just exercising their bodies when they’re running around, they may actually be exercising their brains as well.
A)attendance I)mood
B)consequently J)mutually
C)current K)particularly
D)depressing L)performance
E)dropping M)review
F)essential N)survive
G)feasible O)tend
H)flow
【C9】
选项
答案F
解析 形容词辨析题。空格前面是be动词，后面为介宾结构to learning，因此空格处需要填入形容词，与后面的介词to搭配。前一句中提到体育锻炼可以改善大脑的血液循环，增强记忆力、注意力和创造力。因此，空格处需要填入一个表示褒义的形容词，表明这些能力对学习的重要性。由此确定essential“至关重要的，必需的”为本题答案。同时，be essential to为固定表达。备选形容词中，current和feasible均无法与介词to搭配，可以排除。
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