Do you think sitting and studying all the time will improve your grades? Think again. Getting some exercise may help，too.

New research with older people suggests that taking regular (规律的）walks helps them pay attention(注意）better than if they didn’t exercise.

Previous research had shown that mice learn, remember, and pay attention better after a few weeks of working out on a running wheel. Mice that exercise have greater blood(血）flow to the brain than those who don’t. Their brain cells also make more connections(联系）•

Neuroscientists (神经系统科学家)from the University of Illinois at Urbana-Champaign wanted to find out if the same thing is true for people. First, they measured the physical fitness of 41 adults, ages 58 to 77，after each person walked 1 mile. Then， those people looked at arrows(箭）on a computer screen and had to use computer keys to show which way one particular arrow was pointing.

Adults who were physically fit were faster at the arrow task, and their answers

were just as right as the less-fit persons, the researchers found. The fitter persons also had more blood flow to a part of their brain. So, even going for a walk every 2 or 3 days for just 10 to 45 minutes can help. That should be good news for your grandparents. The effects of exercising on the brains of younger people haven’t been studied yet. Still, it can’t hurt to take some breaks and go for a walk or run around with your friends. You might even do better in school.

根据短文内容，回答下列问题。

36. What can taking regular walks help older people to do?

37. What animal is tested in previous research?

38. How many people were tested by neuroscientists from the University of Illinois?

39. What can be good news for grandparents?

40. Can exercise help you study according to the passage?

A  man walked into a pet shop one day with    a    large    and    very ugly dog. It had long  hair, short legs, no tail and a very wet nose.

“Good morning, sir，” the owner looked at the dog and said, “I’m sorry. No one will want to buy him. He is too ugly. ”

“Well，he is too ugly，” the man said，“but he can talk. ”

“What?” the pet shop owner said in surprise.

“He can speak English. Just listen，” the man answered.

The dog then spoke.

“It’s true, sir，” he said，“I am the world’s greatest talking dog. I’ve been to America and talked to the President in the White House. I’ve talked to the queen of England and the emperor(皇帝）of Japan. Please buy me, sir. This man is very cruel to me. He makes me work too hard. He never takes me for a walk. ”

“You’re right. He is a talking dog. But tell me, why do you want to sell him?” the pet shop owner said.

“Because I was tired of his lies(谎言），” the man said.

(    )31. The dog owner came into the pet shop to_.

A.    make his    dog beautiful

B.    teach his    dog to speak English

C. buy some dog food

D. sell his dog

(    )32. The pet shop owner did not want to buy him at first because the dog was

A.    dirty    B. lazy    C.    expensive    D.    ugly

(    )33. According to the dog, he had met all of the following persons except_•

A. the Japanese emperor    B.    the    British queen

C. the American president    D.    the    Chinese president

(    )34. The pet shop owner was_by    what    the    dog had said.

A.    tired    B. easy    C.    surprised    D.    sad

(    )35. What does the underlined word “cruel” mean in Chinese?

A.友好的    B.残忍的    C.谦逊的    D.擅长的

There is an old saying： Early to bed and early to rise makes a man healthy, wealthy and wise. It means that we should go to bed early and get up early the next morning. By doing this, we will be in good health. And we’ll also be rich and clever. It’s  true that our bodies need to have enough  sleep to be healthy. 

 Children should  have a ten-hour sleep every night. Those who do    not have enough    sleep    can’t    do  their   work very well. They will not be clever and they may not get wealthy in the future.

The    body needs exercise as well.    Walking,    running, jumping,    riding    bikes    and  playing games are all exercises. Exercise    helps    to    keep the body strong and    fit.    It  also

helps the blood(血液）to move around inside the body. The blood takes food to all parts of the body. The head needs blood, too. So exercise helps people think better.

(    )26.    What does the underlined word “rise” mean?

A.    To do exercise.    B.    To get up.

C.    To stand up.    D.    To put up.

(    )27.    If children don’t sleep for 10 hours, they may_.

A.    not be late for school    B.    become wise

C.    do badly in their    work    D.    become rich

(    )28.    A person needs exercise because_.

A. it makes him healthy    B.    he has lots of work    to do

C. he is strong    D.    he does exercise

(    )29.    Which of the following is NOT true?

A. Exercise is good to people’s sleep.

B. It’s good for you to get up early and    go to bed early.

C. If you have enough blood, you will be wise.

D. A student should have 10 hours’ sleep.

(    )30.    According to the passage，to keep healthy, we should_.

A. eat a balanced diet

B. go to bed early, get up late.

C. go to bed early, get up early and    do    more    exercise.

D. get up early and do sports.

John Smith was a high school student and he was quite good at math. He always got an “A” in his math. He loved his computer. He came home 16 every day. Then he 17  on it at home until midnight. But John was not 18 at English. He often got an “F” in his English exam. One day, after school, John walked into the school office. The school office computer had the 19 of all the students： the math grades，the science grades，the grades in arts and music and the grades in English. He 20 his English grade an “F”！ John 21 his English grade from “F” to “A”. John s parents looked at his report card. They were very happy.

“An ‘A’ in English!” said John’s dad happily，“You are a very 22 boy, John. ”

John is a hacker (黑客）• Hackers know how to take information from other’s computers and put 23 information in. Using a modem(调制解调器），they join their computer to others’ computers secretly. School headmasters and teachers are worried about hackers. But this kind of thing still happened. Of course, at last, John was 24 for what he had done and told it to his teacher. From then on, he worked 25 at English than before.

(    )16.    A.    early    B.    late    C.    slowly    D.    loudly

(    )17.    A.    finished    B.    talked    C.    played    D.    lived

(    )18.    A.    long    B.    well    C.    bad    D.    good

(    )19.    A.    books    B.    names    C.    photos    D.    grades

(    )20.    A.    looked for    B.    found    C.    listened    D.    watched

(    )21.    A.    changed    B.    wrote    C.    got    D.    took

(    )22.    A.    easy    B.    clever    C.    hard    D.    quiet

(    )23.    A.    right    B.    wrong    C.    interested    D.    new

(    )24.    A.    sorry    B.    strict    C.    difficult    D.    tired

(    )25.    A. lazier    B.    harder    C.    shorter    D. less

  What do you mean_saying so?

A.    with    B.    to    C.    on    D.    by

  一What are you doing?

—I，m_my    pen, but I can’t_it.

A. finding； find    B.    looking for； find

C. looking for； look for    D.    finding； look for

  My mother_me to read English every morning.

A.    lets    B.    wants    C.    ask    D.    make

  —How often do you drink milk?

—_.    I    don’t    like it.

A.    Often    B.    Always    C.    Hardly ever D.    Sometimes

 —Are you_tomorrow?

一No，tomorrow is quite full for me.

A.    free    B.    full    C.    busy    D.    tired

 She often_TV in the morning.

A. sees    B.    looks    C.    watches    D.    looks at