【文章內(nèi)容簡介】 emperature. 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 .The most mon kind of thermometer is made with mercury(水銀)inside a clear glass tube. As mercury (or any other liquid ) bees hot, it expands. As it gets colder, it contracts(收縮). That is why on hot days the mercury line is high in the glass .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 e 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 thingsin our daily lives. B．Thermometers measure temperature, by using materials that change in the same waywhen 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 willexpand 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 theworld.第六篇：Doctors say anger can be an extremely damaging emotion, unless you learn how to deal with it. They warn that anger can lead to heart disease, stomach problems, headaches, emotional problems and possibly cancer.___71___ Some people express anger openly in a calm reasonable way. Others burst with anger, and scream and yell. But other people keep their anger inside. They can not or will not express it. This is called repressing anger.For years many doctors thought that repressing anger was more dangerous to a person’s health than expressing it. They said that when a person is angry, the brain releases the same hormones (荷爾蒙). They speed the heart rate, raise blood pressure, or sugar into the blood, etc. ___72___Some doctors say that both repressing and expressing anger can be dangerous. They believe that those who express anger violently may be more likely to develop heart disease, and they believe that those who keep anger inside may face a greater danger of high blood pressure.___73___ They say the first step is to admit that you are angry and to recognize the real cause of the anger, then decide if the cause is serious enough to get angry about. If it is, they say, “___74___ Wait until your anger has cooled down and you are able to express yourself calmly and reasonably.”Doctors say that a good way to deal with anger is to find humor in the situation that has made you angry. ___75___A. In general the person feels excited and ready to actB. They said that laughter is much healthier than anger.C. Expressing anger violently is more harmful than repressing itD. Anger may cause yo