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Easy Ways to Keep Your Brain Sharp Everyone is forgetful, but as we age, we start to feel like ou r brains are slowing down a bit and that can be a very annoying thing. 1 Read on for some techniques worth trying. 1. 2 People who regularly made plans and looked forward to upcoming events had a 50 percent reduced chance of Alzheimer's disease ( 老年性痴呆症 ), according to a recent study. 3 Something 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 activity can help get blood glucose down to normal levels. In fact, exercise produces chemicals that are good for your brain. 4 3. Learn something new. Take a Spanish class online, join a drawing club, or learn to play cards. A study found that mental stimulation 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. 5 Or you can just 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 our 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.
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【简答题】当代教育发展的趋势和特点有哪些?
【单选题】共价键参数包括
A.
键长、键能、键角
B.
键长、键能、键角和键的极性
C.
键长、键能、键角和键的伸展方向
D.
键长、键能、键角和键的离解能
【单选题】位觉感受器包括:
A.
蜗管
B.
咽鼓管
C.
蜗窗
D.
壶腹嵴
【单选题】The company also embarked on a (desperate) cost cutting program...
A.
绝望的;孤注一掷的;极需要的
B.
荒凉的
C.
缺乏的
【单选题】Time Is Money.pdf Choose among the four alternatives one word or phrase that is closest in meaning to the underlined part in each statement. Time Is Money, Just Figure Out How Much
A.
d epict
B.
discover
C.
clarify
D.
imagine
【单选题】连续周期信号展开为傅里叶级数,谱线间隔为 π ,则该信号的基本周期为()
A.
1
B.
2
C.
3
D.
4
【简答题】Figure out how each concluding paragraph ends. Choose the proper method.
【多选题】位觉感受器包括
A.
螺旋器
B.
位觉斑
C.
壶腹嵴
D.
环层小体
E.
肌梭
【简答题】位觉感受器包括和
【简答题】共价键的键参数包括键长、键角、键能和()。