To extinguish (熄灭) different kinds of fires, several types of fire extinguishers have been invented. They must be ready for immediate use when fire breaks out. Most portable (手提式的) kinds operate for less than a minute, so they are useful only on small fires. The law requires（要求） ships, trains, buses and planes to carry extinguishers.
Since fuel, oxygen and heat must be present in order for fire to exist, one or more of these things must be removed or reduced to put out a fire. If the heat is reduced by cooling the material below a certain temperature, the fire goes out. The cooling method is the most common way to put out a fire. Water is the best cooling material because it is low in cost and easy to get.
Another method of extinguishing fire is by cutting off the oxygen. This is usually done by covering the fire with sand, steam or some other things. A blanket may be used to cover a small fire.
A third method is called separation, which includes removing the fuel, or material easy to burn from a fire, so that it can find no fuel.
The method that is used to put out a fire depends on the type of fire. Fires have been grouped in three classes. Fires in wood, paper, cloth and the like are called Class A fires. These materials usually help keep the fire on. Such fires can be stopped most readily by cooling with water.If a fire breaks out on a bus, which of the following should be ready there for you to use?
| A．Sand | B．Water | C． A blanket. | D．An extinguisher. |
To cover a small piece of burning wood with a basin( 盆）in order to stop the fire is an example of___________.
| A．separating the fire | B．reducing the heat |
| C．removing the fuel | D．cutting off the oxygen |
In choosing how to put out a fire, we should first be clear about__________.
| A．when it breaks out | B．how it comes about |
| C．what kind it is | D．where it takes place |
What would the author probably discuss in the paragraph that follows?
| A．Another class of fires | B．Another type of extinguishers |
| C．How fires break out. | D．How fires can be prevented. |
Together. 31 years.
Alvin Ailey American Dance Theater
They make you sway. With a dance form all their own. Originating as an intimate, innovative dance company, it has evolved into an international force. Taking the spirit of African—American culture and translating it into dance and community programs for more than 31 years. A heritage of bringing together a repertoire of Ailey classics and great dance masterpieces along with exciting new works by emerging artists. Modern Vibrant. Athletic. Colorful. Involving. Because it is dance in step with the people. Part of the neighborhood, their pulse beats—beats—beats of life. Lifting spirits. Able to leap tall buildings in a single bound. Pirouetting the globe. Soaring, moving as one, moving dance into the future. Join Philip Morris in its 8th year of supporting Alvin Ailey American Dance Theater. And celebrate the achievement of the Ailey past as they boldly step forward.
5. What does the advertisement ask people to do?
A. To see a play. B. To watch a match. C. To ball there. D. To see Philip Morris.
6. How is the company?
A. Modern and involving.B. Intimate and innovative.
C. Athletic and colorfulD. Vibrant and innovative.
7. What does Alvin Ailey American Dance Theater hold this activity for?
A. To develop the spirit of African—American culture.
B. To leap tall buildings in a single bound.
C. To pirouette the globe.
D. To celebrate the achievement of the Ailey past.
Very old people do raise moral problems for almost everyone who comes in contact with them. Their values—this can’t be repeated too often—are not necessarily our values. Physical comfort, cleanness and order are not necessarily the most important things. The social services from time to time find themselves faced with a flat with decaying food covered by small worms, and an old person lying alone in bed, taking no notice of the worms. But is it interfering(干涉) with personal freedom to insist that they go to live with some of their relatives so that they might be taken better care of? Some social workers, the ones who clear up the worms, think we are in danger of carrying this concept of personal freedom to the point where serious risks are being taken with the health and safety of the old.
Indeed, the old can be easily hurt or harmed. The body is like a car, it needs more mechanical maintenance(机械维修，保养) as it gets older. You can carry this comparison right through to the provision of spare parts. But never forget that such operations are painful experiences, however good the results will be. And at what point should you stop to treat the old body? Is it morally right to try to push off death by seeking the development of drugs to excite the forgetful old mind and to activate the old body, knowing that it is designed to die? You can’t ask doctors or scientists to decide, because so long as they can see the technical opportunities, they will feel bound to give them a try, on the principle that while there’s life, there’s hope.
When you talk to the old people, however, you are forced to the conclusion that whether age is happy or unpleasant depends less on money or on health than it does on your ability to have fun.
1. What does the passage mainly tell us?
A. The values are different between the old and the young. B. The moral problems raised by old people.
C. The personal freedom for the old. D. Old people’s viewpoint on life.
2. We can know from the first paragraph that________.
A. Very old people would like to live alone to have more personal freedom.
B. Very old people are able to keep their room clean.
C. Very old people like to live with their children.
D. Social services have nothing to do with very old people.
3. According to the author, which of the following is right?
A. The older a person, the more care he needs. B. Too much emphasis has been put on old people’s values.
C. The human body can’t be compared to a car. D. It is easy to provide spare parts for old people.
4.The underlined word “it” in the last paragraph refers to “________”.
A. their money or their health B. the conclusion you come to
C. your talk to the old peopleD. whether age is happy or unpleasant
Attractions in Wisconsin
Wisconsin Historical Museum
30 N. Carroll Street on Madison's Capitol Square
Discover Wisconsin's history and culture(文化) on four floors of exhibits. Open for public program. Admission is free.
Open Tuesday through Saturday, 9:00am -- 4:00 pm.
(608) 264-6555www.wisconsinhistory.org/museum
Swiss historical village
612 Seventh Ave., New Glarus
The Swiss Historical Village offers a delightful look at pioneer life in America's heartland. 14 buildings in the village give a full picture of every day life in the nineteenth-century Midwest.
Tue.-Fri., May 1st -October 31st , 10:00 am-4:00 pm. Admission is $20.
(608) 527-2317www.swisshistoricalvillage.com
Artisan Gallery & Creamery Café
6858 Paoli Rd., Paoli, WI
One of the largest collections of fine arts and crafts(手工艺品) in Wisconsin. Over 5000 sp. ft. of exhibition space in a historic creamery. While visiting enjoy a wonderfully prepared lunch at our café overlooking the Sugar River. Just minutes from Madison!
Gallery open Tue. -Sun., 10:00 am-5:00 pm.
Café open Wed. -Sat., 11:00 am -3:00 pm.
Sun. brunch with wine, 10:00-3:00 pm.
(608) 845-6600www.artisangal.com
Christopher Columbus Museum
239 Whitney St., Columbus
World-class exhibit -2000 quality souvenirs(纪念品) marking Chicago's 1893 World Columbian Exhibition. Tour buses are always welcome.
Open daily, 8:15 am - 4:00 pm.
(920) 623-1992www.columbusantiquemall.com
| 1． |
Which of the following is on Capitol Square?
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| 2． |
Where can you go for a visit on Monday?
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| 3． |
Where can visitors have lunch?
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| 4． |
We learn from the text that.
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Something in chocolate could be used to stop coughs and lead to more effective medicines, say UK researchers.
Their study found that theobromine, found in cocoa, was nearly a third more effective in stopping coughs than codeine, which was considered the best cough medicine at present.
The Imperial College London researchers who published their results online said the discovery could lead to more effective cough treatment. “While coughing is not necessarily harmful(有害的) it can have a major effect on the quality of life, and this discovery could be a huge step forward in treating this problem,” said Professor Peter Barnes.
Ten healthy volunteers(志愿者) were given theobromine, codeine or placebo, a pill that contains no medicine, during the experiment. Neither the volunteers nor the researchers knew who received which pill. The researchers then measured levels of capsaicin, which is used in research to cause coughing and as a sign of how well the medicine are stopping coughs.
The team found that, when the volunteers were given theobromine, the capsaicin need to produce a cough was around a third higher than in the placebo group. When they were given codeine they need only slightly higher levers of capsaicin to cause a cough compared with the placebo.
The researchers said that theobromine worked by keeping down a verve activity(神经活动), which cause coughing. They also found that unlike some standard cough treatments, theobromine caused no side effects such as sleepiness.According to Professor Barnes, theobromine ______.
| A．cannot be as effective as codeine |
| B．can be harmful to people’s health |
| C．cannot be separated from chocolate |
| D．can be a more effective cure for coughs |
What was used in the experiment to cause coughing?
| A．Theobromine. | B．Codeine. | C．Capsaicin. | D．Placebo. |
We learn from the text that volunteers in the experiment _____.
| A．were patients with bad coughs |
| B．were divided into the three groups |
| C．received standard treatments |
| D．suffered little side effects |
Which of the following would be the best title for the text?
| A．Codeine: A New Medicine | B．Chocolate May Cure Coughs |
| C．Cough Treatment: A Hard Case | D．Theobromine Can Cause Coughs |
Do you know of anyone who uses the truth to deceive (欺骗)? When someone tells you something that is true, but leaves out important in formation that should be included, he can give you a false picture.
For example, some might say, "I just won a hundred dollars on the lottery (彩票). It was great. I took that dollar ticket back to the store and turned it in for on e hundred dollars!"
This guy's a winner, right? Maybe, maybe not. We then discover that he bought $200 worth of tickets, and only on e was a winner. He's really a big loser!
He didn't say anything that was false, but he left out important information on purpose. That's called a half-truth. Half-truths are not technically lies, but they are just as dishonest.
Some politicians often use this trick. Let's say that during Governor Smith's last term, her state lost one million jobs and gained three million jobs. Then she seeks another term. One of her opponents(对手) says, "During Governor Smith's term, the state lost one million jobs!" that's true. However, and honest statement would have been, "During Governor Smith's term, the state had a net gain of two million jobs."
Advertisers(广告商) will sometimes use half-truths. It's against the law to make false statements so they try to mislead you with the truth. An advertisement might say, "Nine out of ten doctors advised their patients to take Yucky Pills to cure toothache." It fails to mention that they only asked ten doctors and nine of them work for the Yucky Company.
This kind of deception happens too of often. It's a sad fact of life: Lies are lies, and sometimes the truth can lie as well.
| 1． |
How much did the lottery winner lose?
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| 2． |
We may infer that the author believes people should.
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| 3． |
What do the underline words "net gain" in Paragraph 5 mean?
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| 4． |
What can we know from the example of the Yucky Pill advertisement?
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