题目内容

In our class ,when the bell rang and the teacher closed his book ,it was a ________for everyone to stand up .

A.signal

B.chance

C.mark

D.measure

 

【答案】

A

【解析】这题考查名词词义辨析:signal信号,chance机会,mark标志,measure 衡量,句意是:在我们班,当铃响了,老师合上书这是一个信号,说明大家要站起来了。选A。

 

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Ea sy Way s to Keep Your Brain Sharp

  Everyone i s forgetful, but a s we age, we start to feel like our brain s are slowing down a bit-and that can be a very annoying thing.  1   Read on for some technique s worth trying.

  1.  2  

  People who regularly made plan s and looked forward to upcoming event s had a 50 percent reduced chance of Alzheimer' s di sea se(老年性痴呆症), according to a recent study.  3   Something a s simple a s setting a goal to have a weekly coffee date with a friend will do.There' s evidence that people who have a purpo se in life or who are working on long or short-term goal s appear to do better.In other word s, keep your brain looking forward.

  2.Go for a walk.

  Mildly rai sed glucose(葡萄糖)level s can harm the area of the brain that help s you form memorie s and phy sical activity can help get blood glucose down to normal level s.In fact, exerci se produce s chemical s that are good for your brain.  4  

  3.Learn something new.

  Take a Spani sh cla s s online, join a drawing club, or learn to play card s.A study found that mental stimulation limit s the weakening effect s of aging on memory and the mind.But the be st thing for your brain i s when you learn something new and are phy sically active at the same time.  5   Or you can ju st go dancing with your friend s.

A.Focu s on the future.

B.Thi s can be e specially harmful to the aged.

C.It should be something like learning gardening.

D.So take a few minute s each day to do some reading.

E.But don't worry if our schedule i sn't filled with life-changing event s.

F.Luckily, re search show s there i s a lot you can do to avoid tho se moment s.

G.In other word s, when you take care of your body, you take care of your brain.

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