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。选项中有两项为多余选项。

Before going outside in the morning, many of us check a window thermometer(温度计)for the temperature. This helps us decide what to wear. _______71______ . We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. If we don’t feel well, we use a thermometer to see if we have a fever. We keep our rooms a certain warmth in the winter and a certain coolness in the summer.

Not all the thermometers use the same system to measure temperature. We use a system called the Fahrenheit scale. But most other countries use the Centigrade scale.

Both systems use the freezing and boiling points of water as their guide._____72_______ .

The most common kind of thermometer is made with mercury(水银)inside a clear glass tube. As mercury (or any other liquid ) becomes hot, it expands. As it gets colder, it contracts(收缩). That is why on hot days the mercury line is high in the glass tube.______73______.

First. Take a clear glass juice bottle that has a cap; fill the bottle with coloured water. Tap a hole in the center of the cap using a hammer and thick nail. Put the cap on the jar. Then stick a plastic straw(吸管) through the nail hole.

_______74____________.

Finally. Place a white card on the outside of the bottle and behind the straw. Now you can see the water lever easily.

_______75___________.

As the temperature goes down, the water will contract, and the lever in the straw will come down. Perhaps you will want to keep a record of the water lever in the straw each morning for a week.

A. We use and depend on thermometers to measure the temperature of many other things in our daily lives.

B. Thermometers measure temperature, by using materials that change in the same way when they are heated or cooled.

C. Now that you know this rule you can make a thermometer of your own that will work.

D. The water will rise in the straw. As the temperature of the air goes up, the water will expand and rise even higher.

E. They label these in different ways. On the Fahrenheit scale water freezes at 32 degrees and boils at 212 degrees. On the Celsius scale water freezes at 0 degrees and boils at 100degrees.

F. Take wax (you may use an old candle if you have one) and melt some of it right where the straw is struck into the cap to seal(把..粘住) them together.

G. People use thermometers which are made by themselves when travelling around the world.

Before going outside in the morning, many of us check a window thermometer(温度计)for the temperature. This helps us decide what to wear.    【小题1】    We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. If we don’t feel well, we use a thermometer to see if we have a fever. We keep our rooms a certain warmth in the winter and a certain coolness in the summer.
Not all the thermometers use the same system to measure temperature. We use a system called the Fahrenheit scale. But most other countries use the Centigrade scale.
Both systems use the freezing and boiling points of water as their guide.    【小题2】   
The most common kind of thermometer is made with mercury(水银)inside a clear glass tube. As mercury (or any other liquid) becomes hot, it expands. As it gets colder, it contracts. That is why on hot days the mercury line is high in the glass tube.    【小题3】  
First. Take a clear glass juice bottle that has a cap; fill the bottle with coloured water. Tap a hole in the center of the cap using a hammer and thick nail. Put the cap on the jar. Then stick a plastic straw(吸管) through the nail hole.
   【小题4】   
Finally. Place a white card on the outside of the bottle and behind the straw. Now you can see the water level easily.
   【小题5】   
As the temperature goes down, the water will contract, and the level in the straw will come down. Perhaps you will want to keep a record of the water level in the straw each morning for a week.

It’s difficult for doctors to help a person with a hurt brain.  36  enough blood, the brain can live only three to five minutes. Usually doctors can’t fix the hurt  37  such a short time.

Dr Robert White thinks he knows a  38  of help. He thinks doctors should make the hurt brain  39  to live for 30 minutes without blood. This gives the doctor  40  time to do something for the brain. Dr White experimented his  41  on fifteen monkeys.  42  he taught them to do different jobs. Then he operated on them. He made the monkeys’ blood go  43  a machine. When the brains’  44  was 10℃, he stopped the blood to the brain. After 30 minutes, he turned the blood back on. He  45  the blood again. After their operations, the monkeys were almost  46  before. They were healthy and busy. Each one could still do the job the doctor  47  them.

Dr White’s idea works well on monkeys. He thinks it will work on  48 . He think it will help with heart problems. A person  49  die when his heart stops; doctors can  50  it again. The problem comes: when the brain is without blood for about 5 minutes, it  51 . If doctors start the heart again after 5 minutes, the person has  52  body but a dead brain. Maybe in the future, doctors will  53  Dr White’s idea. When the person’s heart stops the doctor will  54  cool the brain. They will have 30 minutes to start the heart again. Maybe there will be no  55  the brain.

I can still remember the first day when I met my best friend. She had just moved into the neighborhood and her grandmother brought her down to 1   me. I hid behind my mother and she hid behind her grandmother,  2  to look at each other. Soon, we lost the shyness and started playing with each other. In 7^th grade, I first lost 3   with her. She was  4   family problems and I deserted her.  5   of my new friends liked her 6  they knew she had “problems”.

It was last year when I noticed the 7  . I guess I was just to catch up in high school to realize she 8  someone there for her. I didn’t know 9, but she started cutting herself!

She was 10  from clinical depression(抑郁), and had to go to a 11  during the day. I was very upset at first but with the late night 12 , and meeting each other at midnight. I wanted to be there for her since her new best friend once 13  her since people were calling her crazy.

Yesterday she came to me and said this:“I never knew what a best friend was 14  you were the only person that would 15 me from cutting; the only person that ever made me feel better about myself and my problems. You don’t know this but I was trying to 16  myself that night you called me. You didn’t even know you were 17  me. I owe you so much.”

We both cried. And I guess a kind of 18  from my life is:“never give up on your friends”. Even if they aren’t as cool as others, or people think they are 19 , they need someone there. If you desert them, you will only be 20  yourself. So if a friend needs you, and you care for them, you can never desert them.

1.                A．call            B．find            C．meet D．know

2.                A．scared         B．surprised       C．glad D．eager

3.                A．communication   B．friendship       C．relation   D．touch

4.                A．breaking through B．going through    C．seeing through D．getting through

5.                A．None          B．All             C．Each D．Neither

6.                A．even if         B．however        C．as if  D．because

7.                A．problem        B．coolness        C．assessment    D．sadness

8.                A．had            B．wanted         C．needed   D．expected

9.                A．how           B．why            C．when D．where

10.               A．dating          B．suffering        C．separating D．originating

11.               A．hospital        B．teacher        C．friend D．school

12.               A．comforts       B．conversations    C．persuasions    D．calls

13.               A．liked           B．respected       C．deserted  D．hated

14.               A．when          B．until           C．before    D．after

15.               A．protect         B．support        C．stop  D．warn

16.               A．control         B．kill            C．forget D．enjoy

17.               A．hurting         B．ignoring        C．reminding D．helping

18.               A．fact           B．truth           C．lesson D．experience

19.               A．unfriendly      B．cool           C．strange    D．crazy

20.               A．unhappy        B．foolish         C．impressive D．anxious

Before going outside in the morning, many of us check a window thermometer(温度计)for the temperature. This helps us decide what to wear.__【小题1】__. We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. If we don’t feel well, we use a thermometer to see if we have a fever. We keep our rooms a certain warmth in the winter and a certain coolness in the summer.
Not all the thermometers use the same system to measure temperature. We use a system called the Fahrenheit scale. But most other countries use the Centigrade scale.
Both systems use the freezing and boiling points of water as their guide.__【小题2】___.
The most common kind of thermometer is made with mercury(水银)inside a clear glass tube. As mercury (or any other liquid ) becomes hot, it expands. As it gets colder, it contracts(收缩). That is why on hot days the mercury line is high in the glass tube.__【小题3】_.
First. Take a clear glass juice bottle that has a cap ; fill the bottle with coloured water. Tap a hole in the center of the cap using a hammer and thick nail. Put the cap on the jar. Then stick a plastic straw(吸管) through the nail hole.____【小题4】___.
Finally. Place a white card on the outside of the bottle and behind the straw. Now you can see the water lever easily. ___【小题5】____.
As the temperature goes down, the water will contract, and the lever in the straw will come down. Perhaps you will want to keep a record of the water lever in the straw each morning for a week.