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Losing your ability to think and remember is pretty scary. We know the risk of dementia (痴呆) increases with age. But if you have memory slips, you probably needn’t worry. There are pretty clear differences between signs of dementia and age-related memory loss. After age 50, it’s quite common to have trouble remembering the names of people, places and thing quickly, says Dr. Kirk Daffner of Brigham and Woman’s Hospital in Boston. The brain ages just like the rest of the body. Certain parts shrink, especially areas in the brain that are important to learning, memory and planning. Changes in brain cells can affect communication between different regions of the brain. And blood flow can be reduced as blood vessels narrow. Forgetting the name of an actor in a favorite movie, for example, is nothing to worry about. But if you forget the plot of the movie or don’t remember even seeing it, that’s far more concerning, Daffner says. When you forget entire experiences, he says, that’s “a red flag that something more serious may be involved.” Forgetting how to operate a familiar object like a microwave oven, or forgetting how to drive to the house of a friend you’ve visited many times before can also be signs of something going wrong. But even then, Daffner says, people shouldn’t panic. There are many things that can cause confusion and memory loss, including health problems like temporary stoppage of ...... Defense against memory loss is to try to prevent it by building up your brain’s cognitive (认知的) reserve, Daffner says. “Read books, go to movies, take on new hobbies or activities that force one to think in novel ways,” he says. In other words, keep your brain busy and working. And also get physically active, because exercise is a known brain booster.
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【单选题】家居安防报警系统可以支持( )和紧急按钮报警等多种报警方式。
A.
入侵报警
B.
煤气报警
C.
火警
D.
以上都是
【单选题】—What's in the box? —Oh, my new _____. [     ]
A.
sport shoe
B.
sport shoes
C.
sports shoe
D.
sports shoes
【简答题】选 1 数据选择器,它有 ( ) 位地址码,有 ( ) 个输出端。
【简答题】一长方体木块平放和侧放在水平地面上时,其受力面积之比为 3 ∶ 1 ,则平放和侧放时,对地面的压强之比是 ____________ ,压力之比是 ____________ 。
【简答题】We need shoes for sports.(改为一般疑问句) ________ ________ ________shoes for sports?
【单选题】听力原文:M: I'm looking for some sports shoes. Can you give me some advice? W: That's what I'm here for, Sir. Could you tell me what size you take? M: Of course, 41. W: Ok, we have plenty of choices for y...
A.
Few things.
B.
Not many things.
C.
Plenty of choices.
D.
Nothing in his size.
【判断题】爱岗敬业是职业素养的首要内涵,是职场中员工胜任工作的基础。
A.
正确
B.
错误
【判断题】5 Sports shoes are more appropriate thanleather shoes in workplace.
A.
正确
B.
错误
【简答题】是职业素养的首要内涵,是职业道德和优秀品格的集中体现,是职场中员工胜任工作的基础。
【单选题】—— It’s time for sports! your sports shoes, please. —— Ok, I’m coming.
A.
put on
B.
Dress
C.
wear
D.
Have on
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