题目内容

Hi Wang Ming,

How are you doing these day? I’m so glad that I’ll meet you in September! I know you’ll celebrate the Mid-autumn Festival and I’m interested in it. Could you tell me something about it?

By the way, I want to come to Hangzhou by myself, but my parents thinks it’s too dangerous for me to travel alone. Do you think I should be allowed to travel alone? What should I do?

William

To: Wang Ming

From: William

Hi William,

I’m so glad to hear from you. ____________________________________________________

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Wang Ming

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Let’s try doing the following experiment.

What to do:

Use string to hang a paper clip or other small object at about chest(胸部)level.

Pick up a stick, such as a broom handle. Take three or four steps away from the paper clip.

Now close one eye and walk toward the paper clip. Try to touch it with the tip of the stick. If you miss,try again,still keeping one eye closed. Now try it with both eyes open and see if it’s easier to do.

How it works:

In the experiment, you have to judge how far away the paper clip is. Your brain has several ways of doing this.

One simple way depends on how much your eye has to focus(聚焦)itself. Using only one eye,most people will find it difficult to touch the paper clip on the first try,but the brain still gets some information about distance—though not much.

Your brain can judge distance much better when you look at something with both eyes. In fact, your brain has more than one way to use both eyes in judging distance. For example, to see anything clearly, you have to make both of your eyes point at the object. When you look at a nearby object, your eyes turn inward. You can feel this happening if you look at the tip of your finger and move your finger toward your nose.

Your brain gets information from the eyes about how much they are pointing toward each other. Using that information, the brain can tell how far away any object is, whether it is a basketball or a paper clip.

1.How many materials do we need at least to do the experiment?

A.Two B.Three C.Four D.Five

2.The passage is mainly about that with eyes our brain can judge .

A.how big an object is

B.how high an object is

C.how far away an object is

D.how much information an object is

3.Which of the following is true according to the passage?

A.Our brain judges distance in one way when we use both eyes.

B.Our brain cannot judge the distance of a small object but a big one.

C.How much our eyes focus helps our brain judge the size of an object.

D.How much our eyes focus helps our brain judge the distance of an object.

4.From the experiment we can infer(推断) .

A.with one eye we can see an object as clearly as we use two eyes

B.our eyes turn towards the inside when we look at an object very near

C.within 3 or 4 steps, the nearer an object is, the more clearly we can see it

D.our brain can hardly get any information about distance when we use one eye

What time of day do you feel most alert(清醒的)? Are you more of a morning person? Or does your brain need a few hours to get going? A lot of research suggests that we should pay attention to our body clock. It can tell us what time of day we are best able to perform, according to the Wall Street Journal.

When it comes to the human brain, many people work best later in the morning. This is because the body’s temperature takes time to rise through the day. Taking a warm shower when you wake up can help speed this up.

But everyone’s body clock is different. Morning people will rise early and work better early in the day. Evening people will wake later but their brain will work better toward the end of the day.

Research show that we’re better at some activities at certain times of the day. Physical performance is at its best between 3pm and 6pm, so it’s better to exercise later in the day.

Between noon and 4 pm, people begin to get distracted (思想不集中的). This is partly because our brain becomes less alert after we eat a big meal. Research also shows that we become sleepy around 2 pm.

Finally, it is best to eat during our active periods. This allows our body to burn calories better and stops our blood sugar levels from getting too high.

1.Many people perform best later in the morning because________.

A.they can’t get up very early. B.they have to take a shower first.

C.the body’s temperature needs time to rise. D.that’s when the brain wakes up.

2.Evening people had better _________.

A.rise early and work in the morning. B.wake later and work better in the evening.

C.rise late and work in the morning D.wake later and work after midnight.

3.According to the research, which of the following is TRUE?

A.It’s better to do exercise in the afternoon. B.We perform better after eating a big meal.

C.Sleeping at 2 pm is not good for our health. D.Our body burns calories better at night.

4.What would be the best title for the story?

A.Research about time. B.The best time to do things.

C.Brain performance. D.Different periods of a day.

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