题目

 《关于加强和改进新形势下民族工作的意见》指出，全面推广国家通用语言文字，确保少数民族学生基本掌握和使用国家通用语言文字，同时尊重和保障少数民族使用本民族语言文字接受教育的权利。这说明  ①平等权是民族区域自治的核心内容    ②语言平等是民族团结的政治基础③民族自治地方享有文化管理自治权    ④我国坚持和贯彻民族平等的原则 A.①②             B.②③            C.①④          D. ③④14．Easy Ways to Keep Your Brain SharpEveryone is forgetful，but as we age，we start to feel like our brains are slowing down a bit-and that can be a very annoying thing．（36）F Read on for some techniques worth trying．1．（37）APeople who regularly made plans and looked forward to upcoming events had a 50 percent reduced chance of Alzheimer's disease （早老性痴呆症），according to a recent study．（38）ESomething as simple as setting a goal to have a weekly coffee date with a friend will do．There's evidence that people who have a purpose in life or who are working on long or short-term goals appear to do better．In other words，keep your brain looking forward．2．Go for a walk．Mildly raised glucose （葡萄糖） levels can harm the area of the brain that helps you form memories and physical acti vity can help get blood glucose down to normal levels．In fact，exercise produces chemicals that are good for your brain．（39）G3．Learn something new．Take a Spanish class online，join a drawing club，or learn to play cards．A study found t hat mental stimulation （刺激） limits the weakening effects of aging on memory and the mind．But the best thing for your brain is when you learn something new and are physically active at the same time．（40）COr go dancing with your friends．A．Focus on the future．B．This can be especially harmful to the aged．C．It should be something like learning gardening．D．So take a few minutes each day to do some reading．E．But don't worry if your schedule isn't filled with life-changing events．F．Luckily，research shows there is a lot you can do to avoid those moments．G．In other words，when you take care of your body，you take care of your brain．