Force other than damaging winds are also at work inside tornadoes. Sometimes, as

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Force other than damaging winds are also at work inside tornadoes. Sometimes, as the turning, jumping funnel(漏斗) passes over a house, the walls and ceiling burst apart as if a bomb had gone off inside. This explosion(爆炸) is caused by the low air pressure at the center of a tornado.
The pressure at the center of a tornado is usually 13 pounds per square inch. However, inside the house the air pressure is normal, about 15 pounds per square inch. The difference of 2 pounds per square inch between the inside and outside pressure may not seem like much. But suppose a tornado funnel passes over a small building that measures 20 by 10 by 10 feet. On each square inch of the building, there is 2 pounds of pressure from the inside that is not balanced by air pressure outside the building. On the ceiling, that adds up to an unbalanced pressure of 57,600 pounds. The pressure on the four walls adds up to 172,800 pounds.
If windows are open in the building, some of the inside air will rush out through them. This will balance the pressure inside and outside the building. But if the windows are shut tightly, the great inside pressure may cause the building to burst.
　　Unfortunately, heavy rain happens in thunderstorms that later produce tornadoes. So, people often shut all windows to protect their property. This may cause far worse damage later.
63. Which of the following is the main topic of the passage?
A. Where tornadoes are formed. 　　      B. When tornadoes usually occur.
C. How tornadoes can be prevented.　　     D. Why tornadoes cause so much damage.
64. According to the passage, tornadoes can destroy building because the _____.
A. force of a tornado increases the air pressure in a building
B. air pressure at the center of a tornado is over 172,000 pounds
C. weight of a tornado can crush a building’s roof when it passes overhead
D. air pressure inside a tornado is less than the air pressure inside a building
65. According to the passage, the pressure on a building during a tornado can be reduced　　　　by _____.
A. closing the windows 　　　　　        B. opening the windows
C. using an electric fan 　　　　          D. making the roof and walls stronger

答案

63-65 DDB

解析

略

举一反三

Two Earthquakes in Two Months:
Comparing the Quakes in Haiti (海地) and Chile (智利)
Overview (概要) How do the earthquakes in Chile and Haiti compare? Here, students perform a gallery walk to learn more about the earthquakes from a specific point, and then do a specific research and presentation project or response activity. Finally, they seek answers to their unanswered questions.
Materials Print copies of photographs, charts, documents and other visuals to display, as described below; computer (s) with Internet access (optional), research materials, handouts.
Warm-up Choose and prepare a “gallery” of photographs, graphics, news reports and other materials to display around the room to enable students to consider the 2010 earthquake in Chile.
Depending on course program, choose materials for the gallery that provide a window on the two quakes, through one of the following specific points, or the focus of your choice:
Earthquakes through History Putting the 2010 Chilean and Haitian quakes into historical view related to other earthquakes, including the 1960 Chilean quake and the 2004 Asian earthquake and tsunami.
Rescue and Aid Considering domestic and international response to the disasters by militaries, governments and aid organizations, including rescue and recovery as well as efforts to provide food, water, health care and shelter to those affected.
Related The article Underwater Plate Cuts 400 Mile Gash compares several earthquakes:
Mr. Lin figured that the quake on Saturday was 250 to 350 times more powerful than the Haitian quake.
But Paul Caruso noted that at least on land, the effects of the Chilean tremor (震动) might not be as bad. For one thing, he said, the quality of building construction is generally better in Chile than in Haiti. And the fact that the quake occurred offshore should also help limit the destruction. In Haiti, the rupture (断裂) occurred only a few miles from the capital, Port-au-Prince. The rupture on Saturday was centered about 60 miles from the nearest town, Chillan, and 70 miles from the country’s second-largest city, Concepción.
Read the article using the following questions.
Questions For discussion with others and reading comprehension:
How does the 2010 Chilean earthquake compare to the 1960 Chilean earthquake?
Why do scientists believe that the 2010 Chilean earthquake will not cause the same level of damage as January’s Haitian earthquake did?
How does the 2010 Chilean earthquake compare to the 2004 Indonesian earthquake?
What reasons do scientists give to explain why the Indonesian quake caused so much more damage than the recent Chilean earthquake?
64. Which of the following shows one of the reasons for slighter losses in Chile than in Haiti?
A. Position:

B. Power:

65. We can infer that the article Underwater Plate Cuts 400 Mile Gash includes ________.
A. the causes of the 2010 Chilean earthquake and the 1960 Chilean earthquake
B. the comparison between the 2010 Haitian and the 2004 Indonesian earthquakes
C. the reason for the 2010 Chilean quake being more powerful than January’s Haitian earthquake
D. the reason for less damage in the 2010 Chilean quake than in the 2004 Indonesian earthquake
66. What is the passage most likely to be?
A. A program for research. B. A guide to earthquake study.
C. An advertisement for students. D. An introduction to quakes.

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A university math tutor has discovered the science behind “singledom”, finding that our chances of finding the perfect partner are just 1 in 285,000. Peter Backus, a tutor at the University of Warwick, published his “Why I Don’t Have a Girlfriend” paper after a three-year love drought.
His unconventional study uses a famous math formula called The Drake Equation(德雷克等式), which was first used to estimate the existence of extra-terrestrial(地球以外) life.
The results don"t look promising for British singles. 30-year-old Mr. Backus found that out of the 30 million women in the UK, only 26 would be suitable girlfriends for him.
The dull equation takes into account the number of women aged 24 to 34, living in his home city of London, and who are single, meaning his chances of meeting his dream woman on a night out are slim.
The economics expert said: “There are 26 women in London with whom I might have a wonderful relationship. So, on a given night out in London there is a 0.0000034% chance of meeting one of these special people. That’s a 1 in 285,000 chance, so it’s not great.”
The puzzling Drake equation reads: N =" R*" x Fp x Ne x Fi x Fc x L, and helped pioneering scientist Professor Drake to predict that there could be 10,000 civilizations in our galaxy.
Mr. Backus simply replaced the original equation with his own criteria for a dream date, which included the percentage of women likely to find him attractive, and the number of girls aged 24-34 in London. He said: “The research may sound depressing to people looking for love, but the good news for singles is, it’s probably not your fault!”
56. Mr. Backus’ discovery in this passage is mainly concerned about ______.
A. whether there exists life out of our planet
B. the possibility of his being able to find love
C. how to get rid of singledom
D. what math can do to serve our daily life
57. What does Mr. Backus think of the result of his research?
A. Optimistic. B. Depressing. C. Unrealistic. D. Exciting.
58. What can we learn from the first paragraph?
A. Mr. Backus’ major research field is “singledom”.
B. Mr. Backus found a girlfriend three years ago.
C. Mr. Backus’ new thesis will surely be well received.
D. Mr. Backus has been searching for love for long.
59. By “the good news for singles” in the last sentence, Mr. Backus probably mean _____.
A. you don’t have to blame yourself for remaining single
B. maybe the discovery is not reliable at all
C. the result was based on his own criteria
D. there might be more dream date out of London
60. Which of the following statements is true?
A. This passage could be published in a scientific magazine.
B. The passage intends to prove there are other civilizations.
C. The passage writer doesn’t really understand the Drake equation.
D. Most women in London are not suitable for university teachers.

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D
The oldest forms of medicine are enjoying a comeback. Modern holistic medicine is an approach that treats the whole patient, not just the disease. It is a way to maintain good health rather than cure illness. The most important influences on today’s holistic medicine are ancient Chinese medicine and Indian Ayurvedic medicine, both of which promoted whole body health.
Holistic medicine usually combines diet, physical exercise and meditation, together with other alternative techniques such as massage(按摩) and acupuncture(针炙). Herbal treatment, a practice of treating illness by using plants, is influenced by the writings of Culpeper as well as Chinese and Ayurvedic medicine. Homeopathy(顺势疗法) is one of the forms of holistic medicine which is widely practiced in Europe and the USA. Homeopathy began in Germany in the early 1800s, when Samuel Hahnemann described how very tiny doses(剂量) of a drug had an effect on his patients. According to Hahnemann, the more the drug was diluted(稀释), the stronger its effects. The substance selected would produce similar effects to the disease itself if given in large doses. In the UK homeopathy is regarded as a non-traditional but just about acceptable treatment.
Meditation and contemplation have an important role in holistic medicine. They were brought to Europe by Indian teachers who combined Indian Ayurvedic medicine with Western beliefs. Transcendental meditation(超脱静坐) is one of the best known of these techniques. People repeat words inside their head to reach a state of deep relaxation.
The holistic movement has made many doctors look at the whole patient, not just the disease. Life-style, emotional problems and diet are just some of the factors that can affect a person’s health. Holistic medicine emphasizes good diet, exercise and fresh air, all of which contribute to health. Some clinics now offer holistic medicine along with traditional treatments, so that their patients can choose a combination of treatments that suits them. One problem with holistic medicine is that it is difficult for people to be sure a doctor is reliable. To solve this, many countries want alternative doctors to form professional bodies.
51．Modern holistic medicine centres upon        .
A．curing a disease                                          B．herbal treatment
C．continuous development                          D．keeping patients healthy
52．Which of the following does NOT belong to holistic medicine?
A．massage                                                     B．meditation
C．a balanced diet                                       D．a knee operation
53．The principle of homeopathy is that        .
A．the large doses of medicine that will not be harmful will take better effect
B．the disease will be cured sooner by taking larger doses of medicine
C．a small thinner dose of medicine will be more effective
D．the doses of medicine depend on how serious the illness is
54．Which of the following titles best sums up the passage?
A．Holistic Medicine                                       B．Traditional Medicine Returns
C．History of Medicine                                D．Combination of Treatments Works
55．What can we infer from the passage?
A．Relaxation is the key of holistic treatment.
B．Holistic medicine needs to become more trustworthy.
C．Holistic treatment is more beneficial than traditional treatments.
D．Holistic medicine will become the most welcome treatment soon.

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C
Reading about history is nice, but finding ties to long-ago historical events in your own backyard is really exciting．
In their heavily populated area, neighbors Adam Giles,13, and Derek Hann．12, uncovered pieces of glass that looked quite different from what’s used today．“After digging about two feet down, I came across an interesting bottle,” Derek said．The bottle had a “pontil scar” on the bottle, an indication that it was hand-blown rather than machine made．It also had the name “Fraser” on one side．
Adam found remains of a green bottle and some very thick brown glass—again, far different from today’s．
After doing research on the computer, the boys contacted Aimee Wells of the county’s Cultural Resources office．She showed them a computer program that digitally puts old maps over modern satellite photographs．
Bingo! Their back yards were once part of a military（军事的） encampment（营地） called Camp Alger used by Ohio soldiers on their way to fight in the Spanish-American War in 1898．
So how do a few bottles get connected to a brief war that was more than a century ago? “We get there by good judgment,” Wells said．“We know the time period of the bottles and what happened in that area．” Anyone can dig a hole, but archaeologists seek a deeper understanding．How do objects found relate to things around them?
When Derek and Adam realized that a solider might have held that Fraser bottle 110 years ago, they wondered what he might have been thinking．What did he see as he looked around him? How did he pass the time waiting to go into battle?
Historical records show that while waiting for orders, the soldiers in and around Camp Alger played baseball, played instruments and walked seven miles to the Potomac River once a week for baths．A spread of strange fever forced the closing of the camp, and there are no buildings to study．“What’s left is only what’s in the ground,” said Wells．
Derek’s and Adam’s back yards have joined the 3,400 places listed on the county’s register of archaeological sites．The boys were given tips on how to dig effectively and safely, and on how to document the location of items found．
The official record of their finds serves as another piece of the puzzle for historians seeking to form a more complete story of what happened．
“Not everyone is going to have historical objects in their own yard,” Wells said．“That’s okay．Make your own time capsule and bury it．What would you want people to know about your life years from now?”
63．What is the passage mainly about?
A．How Adam Giles and Derek Hann dug out the remains of an ancient military encampment．
B．What Adam Giles and Derek Hann found in their back yard and its relationship with an encampment．
C．The great contribution Adam Giles and Derek Hann made to the cause of archaeology．
D．The tips on how to dig out ancient objects buried under the ground safely and effectively．
64．From the passage, we can see that the boy’s discovery _______．
A．includes all kinds of hand-made and machine- made glass．
B．has helped historians find out what happened in 1898．
C．couldn’t have been meaningful without Aimee Wells’ help．
D．has added the county to the list of archaeologist sites．
65．When Wells said “We get there by good judgment．” （Paragraph 6）, she meant that_______．
A．they have established the ties to Camp Alger by finding out the time period of the bottles．
B．they have figured out how to get to the place where the brief war happened．
C．they have managed to dig out the bottles in the back yard safely with common sense．
D．they were able to locate the soldiers who used the Fraser bottles 110 years ago．
66．Which of the following fits the description of historical records?
A．The soldiers in and around Camp Alger delighted in playing basketball in their spare time．
B．When Camp Alger was forced to close, all the buildings there were destroyed．
C．The soldiers in and around Camp Alger often buried some bottles underground as time capsules．
D．Camp Alger was forced to close because of a spread of a strange fever．

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C
A new age is coming. Call it what you will: the service economy, the information age, the knowledge society. It all translates to a fundamental change in the way we work. Already we’re partly there, the percentage of people who earn their living by making things has fallen dramatically in the Western World. Today the majority of jobs in America, Europe and Japan are in the service industry, and the number is on the rise. More women are in the work force than ever before. There are more part-time jobs. More people are self-employed. But the range of

the economic transformation can’t be measured by numbers alone, because it also is giving rise to important new way of thinking about the nature of work itself. Long-held ideas about jobs and careers, the skills needed to succeed, even the relation between individuals and employers — all these are being challenged.
We have only to look behind us to get some sense of what may lie ahead. No one looking ahead 20 years possibly could have foreseen the ways in which a single invention, the chip, would transform our world thanks to its applications in personal computers, digital communications and factory robots. Tomorrow’s achievements in biotechnology, artificial intelligence or even some still unimagined technology could produce a similar wave of dramatic changes. But one thing is certain: information and knowledge will become even more valid, and the people who possess it, whether they work in manufacturing or services, will have the advantage and produce the wealth. Computer knowledge will become as basic a requirement as the ability to read and write. The ability to solve problems by applying information instead of performing routine tasks will be valued above all else. If you cast your mind ahead 10 years, information service will be superior. It will be the way you do your job.
66. A characteristic of the new age mentioned in the passage is that .
A. the service industry mainly relies on females
B. manufacturing industries are steadily increasing
C. more people are in the service industry than before
D. the work in the service industry is more comfortable than that in manufacturing industry
67. Which of the following is true according to the passage?
A. People’s traditional concepts about jobs need changing.
B. The relation between employees and employers is b

ecoming tense.
C. More women than men are in the work force.
D. Part-time jobs are more welcome than full-time jobs.
68. By mentioning the invention of “the chip”, the author means to say that       .
A. we haven’t paid enough attention to the importance of high technology
B. the chip is the most important invention today
C. the power of science and technology is beyond our imagination
D. it’s a great challenge to apply new inventions to our life
69. We may draw a conclusion from the passage that        .
A. information will play a greater role in people’s work and daily life in the future
B. we can foresee the future if technology develops fast enough
C. the ability of performing routine tasks gives you an advantage in work
D. robots will replace people to do all the work both in manufacturing and service industries
70. The author’s attitude to the coming age is        .
A. doubtful         B. enthusiastic           C. satisfied        D. Uncertain

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