Question

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. _____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.___ 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.____ 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. __4.____.

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

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.

Answer

1.A

2.E

3.C

4.F

5.D

【解析】

试题分析：我们的日常生活离不开温度计，我们用它来了解气温，测量体温等。温度计的工作原理是水银的热胀冷缩，温度计的制作过程比较容易

1.A根据“check a window thermometer(温度计)for the temperature”可知，本段与温度计和温度有关，空白处后面举了日常用到温度计的几个例子，A项“日常生活中，我们使用并依靠温度计来测量温度”符合段意，故选A。

2.E根据前一句“Both systems use the freezing and boiling points of water as their guide.”可知，本段讲的是华氏温度和摄氏温度的计量方法，E项讲的是各自冰点和沸点的标示方法，与段意相符，故选E。

3.C 根据“As mercury (or any other liquid ) becomes hot, it expands. As it gets colder, it contracts(收缩).”可知，本段讲的是温度计的原理，C项“既然了解了温度计的工作原理，你可以自己动手制作温度计了”，与段落联系最紧密，可知选C项。

4.F从第五段开始，讲的是制作温度计的步骤，根据“Then stick a plastic straw(吸管) through the nail hole.”可知，接下来需要把吸管和瓶盖粘在一起，F项“把蜡或蜡烛熔化，把缝隙粘住”符合上下文的联系，故选F

5.D 根据As the temperature goes down, the water will contract, and the lever in the straw will come down可知本段讲的是制作完成的温度计随着气温的升降而出现的现象，空白处讲的是温度上升时候的现象，故选D

考点：生活类阅读。