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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.
A.Thermometers measure temperature, by using materials that change in the same way when they are heated or cooled.
B.We use and depend on thermometers to measure the temperature of many other things in our daily lives.
C.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.
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 100 degrees.
F.Now that you know this rule you can make a thermometer of your own that will work.
G.People use thermometers which are made by themselves when travelling around the world.

小题1:B
小题2:E
小题3:F
小题4:C
小题5:D 

试题分析:
小题1:从后面的句子:We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. 可知我们需要温度计衡量生活中很多东西的温度。选B
小题2:从前面的句子:Both systems use the freezing and boiling points of water as their guide.可知它们的冰点和沸点是不一样的,选E
小题3:从下面一段的内容,可知我们可以自制温度计。选F
小题4:从前面的句子:Then stick a plastic straw(吸管) through the nail hole.可知下一步是把吸管和盖子连在一起。选 C
小题5:从下面的句子:As the temperature goes down, the water will contract,可知这里讲的是温度上升。选D 
点评:文章层次结构清晰,上下文联系紧密,做题时,先通读全文,熟悉各选项,填句子的时候注意密切联系上下文,认真体会上下文之间的联系,填好之后可以代入检查核对。
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