题目内容：

What can keep your brain young and active? Marie Pasinski, 1. doctor from Massachusetts General Hospital, says, “New experiences as well as a good snack.”

The next time you feel 2.(bore) at the pool, play a board game or cards. Exercising your mind with a challenging game that requires brainpower, 3. chess or bridge (桥牌), is more than just fun. These types of games are so interesting 4. they can build up working memory. Traveling, especially in the places where English isn’t spoken, can make you 5.(smart) and more intelligent. There is a great deal of recent research proving its benefits.

6. the other hand, eat more nuts! Not only are nuts the perfect snack for a summer road trip, they also keep your mind sharp. Some nuts are rich in magnesium(镁), 7. can improve learning skills and memory of mice. The research 8.(publish) in the Journal Neuron last month. Another study at New York State Institute also proved the point, 9. (show) that mice who ate nuts made improvements in learning, memory, emotional regulation and movements, compared with 10. who didn’t eat nuts.