No matter what he is doing, every human being gives body heat. The usual problem is how to dispose
of it. But the designers of the Johnstown campus of the university of Pittsburg set themselves the opposite
problem-how to collect body heat. They have designed a collection system which uses not only body heat
but also the heat given off by such objects as light bulbs and refrigerators as well. The system works so
well that no conventional fuel is needed to make the campus"s six buildings comfortable.
Some parts of most modern buildings-theatres and offices as well as classrooms-are more than heated
by people and lights and sometimes must be air-conditioned even in the winter. The technique of saving
and redistributing it is called "heat recovery". A few modern buildings recover heat, but the university"s
system is the first to recover heat from some buildings and reuse it in others.
Along the way, Pitt has learned a great deal about some of its heat producers. The harder a student
studies, the more heat his body gives off. Male students emit more heat than female students, and the larger
a student, the more heat he produces. It is tempting to conclude that the hottest prospect for the Johnstown
campus would be a hard-working, overweight male genius.
B. collect
C. get rid of
D. place in suitable positions
B. six buildings are heated by the heat system on the Johnstown campus
C. the heat is supplied by human bodies, other heat-omitting objects
D. the heat from human bodies, other heat-omitting objects is only used in cold winter
B. a thin male who studies hard
C. a thin female who does not study hard
D. a large male who studies hard
B. objective
C. serious
D. humorous
scientists. But recent studies suggest that the problem of alcoholism (酒精中毒) should also be the focus
of investigation by biologists.
While such things as hard jobs, boredom, and unhappiness can lead to alcoholism, researchers at a
prominent university have found that there may also be a genetic factor involved in alcoholism. In the study,
children of alcoholic parents were surveyed. The result showed that the children of alcoholic parents were
more likely to become alcoholics themselves than were children of non-drinking parents.
This evidence in itself is not conclusive (令人确信的) about anything. After all, it may be the constant
exposure (接触) and easy access to alcohol that cause the children of alcoholics to become alcoholics
themselves. But there is more evidence. The study found that children born of alcoholic parents but raised
by non-drinking foster (抚养的) parents also were susceptible to alcoholism. This group of offspring (后
代) was more likely to take up drinking than youngsters who were born of and raised by non-drinking
parents.
Other evidence found in the study suggests that environment does not play as important a role in the
development of alcoholism as had been previously thought. The study found that the likelihood of alcoholism
was better predicted from the characteristics of the parents than from such environmental characteristics
as type of job or level of income.
B. To study the psychological factor in the development of alcoholism.
C. To describe how the children of alcoholic parents become alcoholics themselves.
D. To describe the close link between genetic make-up and alcoholism.
B. Non-drinking parents.
C. Hard jobs, boredom and unhappiness.
D. Foster parents" raising.
B. A person who was born of alcoholic parents.
C. A person who was raised by drinking foster parents.
D. A person who was born of and raised by non-drinking parents.
B. An environmental problem.
C. A biological problem.
D. An educational problem.
been recycled from their urine (尿), sweat and water got from air. They said "cheers" to NASA workers
on the ground.
The urine recycling system is needed for astronaut stations on the moon and Mars. It also will save NASA
money because it won"t have to ship up as much water to the station by space shuttle or cargo rocket.
Besides, it"s important as the space station is about to expand from three people living on board to six.
The recycling system had been brought up to the space station last November, but it couldn"t be used until
samples (样品) were tested back on earth. So when it came time to actually drink up, NASA made a big deal
of it. The three-man crew stood holding their drinks and congratulated engineers in two NASA centers that
worked on the system.
"This is something that had been the stuff of science fiction," American astronaut Michael Barratt said
before taking a small mouthful. The taste is worth trying.
The new system takes the combined urine of the crew from the toilet and moves it to a big tank, where
the water is boiled off, and the vapor is collected. The rest of the urine is thrown away. Then the water vapor
is mixed with water from air, and then it goes through filters (过滤器). When six crew members are aboard,
it can make about six gallons from urine in about six hours.
"Some people may find the idea of drinking recycled urine distasteful, but it is also done on earth, but with
a lot longer time between urine and the tap," said Marybeth Edeen, the space station"s national lab manager.
The technology NASA developed for this system has already been used for quick water purification after
the 2004 Asian tsunami.
B. with it NASA won"t need to ship any water up to the space station
C. it protects the environment in space by reducing the amount of waste
D. it can help meet the need for more water after the crew is expanded
a. The samples of the recycled water were tested on earth.
b. Astronauts celebrated the space"s first making water from urine.
c. The recycling system was brought up to the space station.
d. The technology for the system was used to quickly purify water.
B. a, c, b, d
C. d, c, a, b
D. d, a, c, b
B. the effect of the recycling system
C. an opinion on recycling urine
D. the theory behind the recycling system
B. New Technology Is Used in the Space Station
C. The Research of NASA Has Made Great Progress
D. Good News: Water Recycled from Urine Tastes Good
admit that their spoken English is poor. Whenever I speak to a Chinese student, they always say, "My
spoken English is poor." 1_____ I would like to suggest that there may be some reasons for their problems
with spoken English.
First, they fail to find suitable words to express themselves due to a limited vocabulary. 2_____ However,
you can speak with a limited vocabulary, if you choose a positive attitude. Others will follow you as long
as you use the words that you know.
3_____ Sometimes they make mistakes when they are speaking because they are shy and nervous. Yet
students should remember that their goal should be FLUENCY NOT ACCURACY. Your aim in writing is to
be accurate following the rules for grammar and using the right words and spelling them correctly. However,
in speaking your aim is fluency. You want to get your message across, to talk to someone in English, as
quickly and as well as you can, even though sometimes you may use a wrong word or tense, but it doesn"t
matter. 4_____
The third reason is that not enough attention is paid to listening. You have one mouth but two ears! All
that hearing is necessary for you to start speaking.
Fourth, most Chinese students are reactive rather than proactive language learners. Instead of actively
seeking out opportunities to improve their spoken English they passively wait for speaking opportunities to
come to them and wonder why their English always remains poor. 5_____
B. They may try to avoid making similar mistakes next time.
C. Obviously the better answer is to expand their vocabulary.
D. If you have this proactive outlook, then you will see English opportunities wherever you go.
E. However, their spoken English does not have to remain "poor"!
F. Second, they are afraid of making mistakes.
G. The second reason lies in the reluctance of using what has just been learned.
writing? Paper. No notebooks, no textbooks, no test paper. Nor are there any pencils or pens, which always
seem to run out of ink at the critical (关键的) moment.
Students don"t any handwriting in this class. Instead, they use palm(手掌) size, or specially designed
computers. The teacher downloads texts from Internet libraries and sends them to every student"s personal
computer.
Having computers also means that students can use the Web. They can look up information on any subject
they"re studying!
High school teacher Judy Harrell in Florida, US, described how her class used the Web to learn about the
war in Afghanistan over one year ago.
"We could touch every side of the country through different sites, from the forest to refugee camps (难
民营)," she said. "Using a book that"s three or four years old is impossible."
A paperless classroom is a big step towards reducing the waste of paper. High school teacher Stephanie
Sorrell in Kentucky, US, said she used to give 900 pieces of paper each week to each student.
But, with all this technology, there"s always the risk that the machines will break down. So, in case of a
power failure or technical problems, paper textbooks are still widely available for these hi-tech students.
B. pencils
C. test papers
D. paper textbooks
B. computers are the best teachers
C. his class is better equipped than others"
D. high school students are interested in wars
B. a paper classroom is a big step towards reducing the waste of paper
C. only students in the US have benefited from paperless classrooms
D. there are already a large number of students using paperless classrooms
B. tell us the news about a new technology in classrooms
C. inform us how we will benefit from paperless classrooms
D. advise all schools to use paperless classrooms
to read rapidly.
Perhaps you have been told about some habits which keep a person from reading fast and have been strongly
asked to break those habits which you might have.
Do you still have any of these bad habits? Check yourself by answering "yes" or "no" to these questions:
a. Do you move your lips when reading silently?
b. Do you point to those words with your fingers as you read?
c. Do you move your head from side to side as you read?
d. Do you read one word at a time?
If you answer "yes" to any of these questions, start at once to break the habit. If you move your lips, hold
your fingers over them, or hold a piece of paper between your lips while you are reading. Then if your lips
move, you will know it and stop them moving.
If you point to words, hold the two sides of your book, one side with your left hand, the other side with your
right hand. Then you won"t have a free finger to use in pointing while reading. If you move your head, place
your chin in one hand, and hold your head still.
If you read no more than one or two or three words at a time, you need to work very hard in learning to take
in more words at each glance when your eyes are traveling across the lines of words.
Even if you do read fairly fast now, you can learn to read even faster. As you probably have been told, the
secret of fast reading is to take in whole groups of words at each glance. Read in groups and force your eyes
along the lines of words as fast as you can make them go. Anyone who practices doing these two things will
be able to read faster.
B. not keep your head still
C. not use your finger to point to the words
D. do all of the things mentioned in A, B and C
B. to tell others to be silent
C. to keep yourself from talking to others
D. to hold a piece of paper between them
B. you need look at every word carefully
C. you need to remember every word
D. you need to read several words at a time
B. you can learn to read even faster
C. you can go on reading like that
D. you can enjoy reading
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