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．People use thermometers which are made by themselves when travelling around the world.
B. We use and depend on thermometers to measure the temperature of many other things in our daily lives.
C．Thermometers measure temperature, by using materials that change in the same way when they are heated or cooled.
D．Now that you know this rule you can make a thermometer of your own that will work.
E．The water will rise in the straw. As the temperature of the air goes up, the water will expand and rise even higher.
F．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.
G．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.
They are among the 250, 000 people under the age of 25 who are out of work in the Netherlands, a group that makes up 40 percent of the nation’s unemployed．A storm of anger boils up at the government-sponsored （政府资助的） youth center, even among those who are continuing their studies．
“We study for jobs that don’t exist,” Nicollets Steggerda, 23, said．
After thirty years of prosperity, unemployment among 10 member nations of the European Community has reached as much as 11 percent, affecting a total of 12．3 million people, and the number is climbing．
The bitter disappointment long expressed by British youths is spreading across the Continent．The title of a rock song “No Future” can now be seen written on the brick walls of closed factories in Belgium and France．
One form of protest（抗议） tends to put the responsibility for a country’s economic troubles on the large numbers of “guest workers” from Third World nations, people welcomed in Western Europe in the years of prosperity．
Young Europeans, brought up in an extended period of economic success and general stability, seem to be similar to Americans more than they do their own parents．Material enjoyment has given them a sense of expectation, even the right to a standard of living that they see around them．
“And so we pass the days at the discos, or meet people at the café, and sit and stare,” said Isabella Cault．"There is usually not much conversation．You look for happiness．Sometimes you even find it．”
1.Unemployment in the Netherlands has affected _______
A．one million people B．250,000 people
C．1ess than half of the population D．about 0.6 million people
2.What Nicollete Steggerda said （Para．2） means that ________．
A．the students cannot get work after graduation
B．what the students learn is more than necessary
C．the students’ aim in study is not clear
D．school education is not sufficient
3.The underlined word ‘‘it” in the last paragraph most probably refers to ________．
A．material enjoyment B．a sense of expectation
C．happiness D．a job
Many people believe we are heading for environmental disaster _____we radically(彻底地) change the way we live.
A. but B. although C. unless D. until
----Is there any possibility of the film _____in Paris International Festival?
----Not in the least, because the audience generally think little of it.
A. being tried out B. tried out C. trying out D. to try out
The driver was at____ loss when ____word came that he was forbidden to drive for speeding.
A. a; the B. a; / C. the; the D. /; /
1.一些人订阅了多达两三种不同的报纸。
2.你在会上提出的建议值得考虑。
3.事实上，我使用这辆自行车越多，似乎我就越增肥。
4.他们告别了家乡，动身前往城市。
5.不要把自己直接暴露在强光下。
