题目列表(包括答案和解析)
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Conan Doyle became famous for writing stories about Detective Holmes. So he was often asked to settle puzzling problems.
One day, a woman told him a strange story. Her husband had died 5 years before, and grave had been built for him. The grave was built like this: on the huge stone base was a big stone ball, in the front of which a cross was cut. The ball would move in winter and the cross in the stone ball could hardly be seen.
Conan Doyle decided to see how matters stood with the woman. The grave was just like what the woman had told him. And nobody could move the stone ball, which was put in a very shallow(浅的)hole in the stone base to roll(滚)off. There was water in the hole, too. He thought for a minute and then said to the woman,“The problem is easy to explain. It’s very cold and often rains or snows here. So there is always water in the hole. The water turns into ice at night. During the day, the southern part of the ice in the hole turns into water again while the northern part of it still remains ice, so the stone ball leans(倾斜)southward little by little and the cross in the stone ball moves downwards with the ball.”
1.Which of the following can take the place of the word “grave”?
A. box B.tomb C.bed D.hall
2.Why did the woman have her husband’s grave built like that?
A. Conan Doyle told her to do so.
B.Holmes told her to do so.
C.Her husband told her to do so before he died.
D.The story didn’t tell us the reason.
3.From the story we can see that Conan Doyle was a man.
A.who was always ready to help others
B.who wrote a lot of funny stories
C.who was careful and thoughtful
D.who always explained funny problems
4.On hearing what Conan Doyle had said, perhaps the woman would.
A. think what Conan Doyle said was reasonable
B.feel that she might be fooled by him
C.feel that she was too silly to explain it
D.think what Conan Doyle said was without reason
5.From the following cutaway views(剖视图)choose the correct one which shows the positional relation between the stone base and the stone ball.
(sl=stone ball se=stone base)
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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为选项.
Ea sy Way s to Keep Your Brain SharpEveryone 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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