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  3. Doctors are starting to find more and more information that suggests a connection between exercise and brain development. Accord

Doctors are starting to find more and more information that suggests a connection between exercise and brain development. Accord

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问题     Doctors are starting to find more and more information that suggests a connection between exercise and brain development. According to some research, it seems that exercise can make blood vessels, including those in the brain, stronger and more fully developed.
    The effects of exercise on brain development can even be seen in babies. Babies who do activities that require a lot of movement and physical activity show greater brain development than babies who are less physically active. Margaret Barnes, a pediatrician, believes in the importance of exercise. She thinks that many learning disabilities that children have in elementary school or high school can be traced back to a lack of movement as babies.
    In studies with seniors, research has shown that exercise helps older people as well. The exercise does not have to be very difficult. The main goal is just to increase the heart rate. And especially when learning new movements, such as yoga or tai-chi, it appears that new memory paths open up in the brain. This can improve people’s short term memory.  
Why is yoga recommended for seniors?
选项 A、It helps them learn new movements.
B、It can be done in groups.
C、It slows down their heart rate.
D、It is good for joints.
答案A
解析 最后一段提到学习瑜珈、太极等新动作对老年人的大脑发展帮助尤其大。做运动的主要目的是提高(increase)心率而不是降低(slow down)心率。文章并未提到瑜珈是集体项目或是其对关节有利。
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