题目内容

    The surprising experiment I am about to describe proves that air is all around you and that it presses down upon you. Air pressure is a powerful force. When you swim underwater, you can feel water pushing down on your body. The air all around you does the same. However, your body is so used to it that you do not notice this. The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth’s surface.

    The following experiment is an easy one that you can do at home. But make sure that you are supervised, because you will need to use matches. Now for the experiment!

What you need

 ??A hard-boiled egg without the shell

 ??A bottle with a neck slightly smaller than the egg

 ??A piece of paper

 ??A match

 Method

 1) Check that the egg will sit firmly on the neck of the bottle.

 2) Tear the paper into strips and put the strips into the bottle.

 3) Light the paper by dropping a burning match into the bottle.

 4) Quickly sit the egg on the neck of the bottle.

Result

    Astonishingly, the egg will be sucked into the bottle. Your friends will be amazed when you show them the experiment. But be careful when you handle matches.

Why it happened

    As the paper burns, it needs oxygen and uses up the oxygen (air) in the bottle. The egg acts as a seal in the neck of the bottle, so no more air can get inside. This reduces the air pressure inside the bottle. The air pressure must equalize, so more air from outside must enter the bottle. The outside air pressure against the egg and then the egg is pushed into the bottle! This proves that air is all around and that it is pressing down on it.

Why is there the need to take care when you are doing the experiment?

 A. The bottle could break.

 B. You need to light the paper with a match.

 C. The egg needs to be shelled.

 D. The egg has to be perfectly placed on the neck of the bottle.

In the experiment, the burning inside the bottle can___.

 A. equalize the air pressure inside and outside

 B. make a seal in the neck of the bottle

 C. finish up the oxygen inside the bottle

 D. produce more oxygen inside the bottle

How did the egg put into the bottle?

 A. The oxygen inside the bottle sucked the egg in.

 B. It became saft without the shell.

 C. The neck of the bottle was wide enough.

 D. The outside air pressure forced it into the bottle.

The experiment is carried cut to prove ______.

 A. water pushes on your body when you swim underwater.

 B. the earth is surrounded by a layer of air called the atmosphere.

 C. the pressure of air around us has a powerful force.

 D. the air pressure is not equalized around us.

【小题1】B

【小题2】C

【小题3】D

【小题4】C


解析:

【小题1】细节理解。根据第二段的内容可知在做实验的过程中要小心,因为需要使用火柴,由此可知B项是正确的。

【小题2】细节理解。根据第一段第一句中的内容可知瓶内有燃烧可以耗尽里面的氧气。

【小题3】细节理解。根据最后一段到数第二句中的内容可知,鸡蛋是在瓶外空气的压力下掉入瓶中的。

【小题4】推理判断。结合第一段中的Air pressure is a powerful force和最后一段最后一句的内容可以推知这实验的目的是证明我们周围的空气具有很大的压力。

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阅读理解

  My father made a deal with me that he would match whatever I could come up with to buy my fir st car.From the time I wa s a saver.My allowance, back in tho se day s, wa s twenty five cent s a week.I grew up on a farm near a small town called Ventura.In tho se day s the area wa s mo stly agricultural.The climate wa s and still i s a s clo se to perfect a s you could get.I earned some of my money picking one crop or another.When I wa s about ten, a school friend' s family owned walnut orchard s(果园)and it wa s harve st time.She told me we could earn five dollar s for every bag of walnut s we picked.I certainly learned about picking walnut s that day.Not surprisingly, that wa s my fir st and la st time a s a walnut picker.

  In 1960 my grandmother pa s sed away.She left me 100 share s of AT&T.One hundred share s of stock don't seem like much today but back then tho se share s paid me$240 per year in dividend s(利息).That wa s huge for a kid my age.

  By the time I wa s seventeen.I had saved up $ 1, 300 and I knew exactly that I wanted.Ithink my father wa s somewhat suri sed when I announced I had saved up $ 1, 300 and wa s ready to buy my new car.I'll never forget the evening my father said, “Let' s go see about that car”.I wa s so excited.

  My father could have ea sily ju st given me the car but he alway s in si sted that hi s children work for what they got.Thi s wa s not a bad thing.I learned self-reliance.Self-reliance i s equal to freedom.Now that I think about it I need to be thanking my father.

(1)

Which one of the following s didn't belong to the saving of $1, 300?

[  ]

A.

Weekly allowance.

B.

Her earning s by picking crop s.

C.

Share s left by grandma.

D.

Money earned from selling share s.

(2)

The underlined part in the second paragraph probably meant ________.

[  ]

A.

she didn't have the chance of picking walnut s

B.

enough money had been earned for her car

C.

the work wa s too hard for children like her

D.

she had no time to do that again for some rea son

(3)

We can know from the pa s sage the author got her car at the age of ________.

[  ]

A.

16

B.

17

C.

18

D.

19

(4)

The purpo se of the author' s father doing like that wa s to ________.

[  ]

A.

give the author freedom

B.

be unwilling to buy the author a car

C.

teach the author to learn self-reliance

D.

give the author a big surpri se

完形填空(共20小题,每小题1.5分,满分30分)

阅读下面的短文,从A,B,C,D四个选项中,选出最佳选项。

It was getting colder as my family ran out of the church, eager to get home. Across the street was a gas station where the bus  36  . It was closed for Christmas, but we noticed a family  37 outside the locked door, shaking in the rain. We talked about why they were there but soon I  38  all about them

When we got home,we received a call from my grandparents,  39  us to their house for the Christmas dinner. As we  40  through town, I noticed that the family was still there, standing outside the gas station

“Look at the children! That's just my 41 childhood. I must do something.” With these words,my father pulled off the road, and I saw the whole family: the parents and three children.

Rolling down his window,my father asked, “Waiting for the   42  ?”

“Yes.” the father replied _ 43 , “We're going to the nearby town where I have a brother and maybe a chance of  44 _. Out of work for two months now.”

“Well, that bus won't come for several hours, and you're getting _45 standing here.” my father 46  . “Why not get in the car and I'll drive you there.”

The man thought for a moment,and then he  47 . Once they got in,my father looked back _48  his shoulder and asked the children if Santa Claus had found them yet. The  49  faces gave him the answer

“Well,when I saw Santa Claus this morning,” my father said, winking (眨眼) at us, “he asked me if he could leave your toys at  50 .We'll just go to get them  51   I take you to your destination.”

All at once, the children's   52  lit up,and they began talking and laughing

When we got to our house, they  53  straight to the toys in our Christmas tree. One of the girls took Jill's doll. The little boy grabbed Sharon's ball.And the other girl picked up something of mine

It happened a long time ago, but I still remember the   54 on their faces. That was the Christmas when my sisters and I  55  the joy of making others happy

36.A.travelled       B.stayed               C.stopped         D.left

37.A . sitting          B.standing              C.holding           D.keeping

38.A.cared        B.argued                 C.worried          D.forgot

39.A.inviting        B.introducing     C.telling         D.forcing

40.A.flew         B.drove                 C.raced           D.walked

41.A.lucky          B.surpri sing             C.difficult    D.frightening

42.A.bus           B.time                 C.train             D.help

43.A.warmly        B.gently                C.shyly             D.angrily

44.A.a job          B.a dinner               C.a friend          D.a present

45.A.comfortable    B.sad                  C.wet             D.warm

46.A.explained       B.suggested             C.ordered           D.decided

47.A.added         B.sighed                C.nodded           D.refused

48.A.on            B.to                   C.from             D.over

49.A.excited        B.disappointed  C.worried           D.interested

50.A.the station                 B.the bus                    C.my car            D.my house

51.A.before          B.if                     C.once             D.when

52.A.words         B.faces                 C.lives     D.feelings

53.A.turned       B.jumped               C.ran              D.moved

54.A.anger                  B.surprise      C.tears             D.smiles

55.A.learned        B.practiced     C.recognized         D.made

完形填空(共20小题,每小题1.5分,满分30分)

阅读下面的短文,从A,B,C,D四个选项中,选出最佳选项。

It was getting colder as my family ran out of the church, eager to get home. Across the street was a gas station where the bus  36  . It was closed for Christmas, but we noticed a family  37 outside the locked door, shaking in the rain. We talked about why they were there but soon I  38  all about them

When we got home,we received a call from my grandparents,  39  us to their house for the Christmas dinner. As we  40  through town, I noticed that the family was still there, standing outside the gas station

“Look at the children! That's just my 41 childhood. I must do something.” With these words,my father pulled off the road, and I saw the whole family: the parents and three children.

Rolling down his window,my father asked, “Waiting for the   42  ?”

“Yes.” the father replied _ 43 , “We're going to the nearby town where I have a brother and maybe a chance of  44 _. Out of work for two months now.”

“Well, that bus won't come for several hours, and you're getting _45 standing here.” my father 46  . “Why not get in the car and I'll drive you there.”

The man thought for a moment,and then he  47 . Once they got in,my father looked back _48  his shoulder and asked the children if Santa Claus had found them yet. The  49  faces gave him the answer

“Well,when I saw Santa Claus this morning,” my father said, winking (眨眼) at us, “he asked me if he could leave your toys at  50 .We'll just go to get them  51   I take you to your destination.”

All at once, the children's   52  lit up,and they began talking and laughing

When we got to our house, they  53  straight to the toys in our Christmas tree. One of the girls took Jill's doll. The little boy grabbed Sharon's ball.And the other girl picked up something of mine

It happened a long time ago, but I still remember the   54 on their faces. That was the Christmas when my sisters and I  55  the joy of making others happy

36.A.travelled       B.stayed               C.stopped         D.left

37.A . sitting          B.standing              C.holding           D.keeping

38.A.cared        B.argued                 C.worried          D.forgot

39.A.inviting        B.introducing     C.telling         D.forcing

40.A.flew         B.drove                 C.raced           D.walked

41.A.lucky          B.surpri sing             C.difficult    D.frightening

42.A.bus           B.time                 C.train             D.help

43.A.warmly        B.gently                C.shyly             D.angrily

44.A.a job          B.a dinner               C.a friend          D.a present

45.A.comfortable    B.sad                  C.wet             D.warm

46.A.explained       B.suggested             C.ordered           D.decided

47.A.added         B.sighed                C.nodded           D.refused

48.A.on            B.to                   C.from             D.over

49.A.excited        B.disappointed  C.worried           D.interested

50.A.the station                 B.the bus                    C.my car            D.my house

51.A.before          B.if                     C.once             D.when

52.A.words         B.faces                 C.lives     D.feelings

53.A.turned       B.jumped               C.ran              D.moved

54.A.anger                  B.surprise      C.tears             D.smiles

55.A.learned        B.practiced     C.recognized         D.made

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