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 researches, 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.(72)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.(73)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 are yoga and tai chi recommended to seniors?

选项 A、They are new movements.
B、They are good for memory.
C、They can slow down their heart rate.
D、They are good for joints.

答案B

解析 事实细节题。根据文章最后两句话可知,这些运动有助于提高人们的短时记忆,故选B。
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