题目内容
（请给出正确答案）
The energy associated with molecules is known as _____.
A.kinetic energy
B.potential energy
C.mechanical energy
D.thermal energy
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更多“The energy associated with mol…”相关的问题
第1题
Colors Associated with Feeling and Attitudes
We all associate colors with feeling and attitudes. In politics dark blue often means" tradition", and red means "social change". But blue can also mean sadness (I'm feeling blue ), white is often for purity, although in China white is worn for funerals, and red is used to express the joy of a wedding, in Western Europe white is worn at weddings and black for funerals. Advertisers are aware of the importance of selection colors according to the way people react to them. Soap powders come in white and light blue packets (clean and cold, like ice ); cereals often come in brown packets (like wheat fields ), but cosmetics never come in brown jars (dirty !).
Where do these ideas come from？ Max Luscher from the University of Geneva believes that in the beginning life was dictated by two factors beyond our control: night and day. Night brought passivity, and a general slowing down of metabolism (新陈代谢); day brought with it the possibility of action, and increase in the metabolic rate, thus providing us with energy and initiative. Dark blue, therefore, is the color of quiet and passivity, bright yellow the color of hope and activity.
In prehistoric times, activity as a rule took one of two forms: either we were hunting and attacking, or we were being hunted and defending ourselves against attack. Attack is universally represented by the color red; self-preservation by its complement green.
In Luscher's view, the association of colors with feeling and attitudes can be traced back to______.
A．the association of day and night with passivity and action in ancient time
B．the association of black with funerals in Western Europe
C．the association of white with purity in some countries
D．the association of red with joy in China
第2题
Smart Window
Windows not only let light in to cut down an electricity use for lighting, but the light coming through the window also provides heat. However, windows are not something people typically associate with being a cutting edge technology. Researchers are now working on new technologies that enable a window to quickly change from clear to dark and anywhere in between with a flip of a switch.
"It took us a long time to figure out what a window really is," says Claes Granqvist. He's a professor of solid-state physics at Uppsala University in Sweden. "It's contact with the outside world. You have to have visual contact with the surrounding world to feel well. " So, windows and natural light are important for improving the way people feel when they're stuck indoors.
Yet, windows are the weak link in a building when it comes to energy and temperature control. In the winter, cold air leaks in. When it's hot and sunny, sunlight streams in. All of this sunlight carries lots of heat and energy. And all of this extra heat forces people to turn on their air conditioners. Producing blasts of cold air, which can feel so refreshing, actually suck up enormous amounts of electricity in buildings around the world.
Windows have been a major focus of energy research for a long time. Over the years, scientists have come up with a variety of strategies for coating, glazing, and layering windows to make them more energy efficient. Smart windows go a step further. They use chromogenic technologies which involve changes of color.
Electrochromic windows use electricity to change color. For example, a sheet of glass coated with thin layers of chemical compound such as tungsten oxide works a bit like a battery. Tungsten oxide is clear when an electric charge is applied and dark when the charge is removed, that is, when the amount of voltage is decreased, the window darkens until it's completely dark after all electricity is taken away. So applying a voltage determines whether the window looks clear or dark.
One important feature that makes a smart window so smart is that it has a sort of "memory. " All it takes is a small jolt of voltage to turn the window from one state to the other. Then, it stays that way. Transitions take anywhere from 10 seconds to a few minutes, depending on the size of the window. The development of smart windows could mean that massive air conditioning systems may no longer need. "In the future," Granqvist says, "our buildings may look different. "
Which of the following statements does not indicate the importance of windows as described in the first two paragraphs？
A．Windows can change from clear to dark to save energy.
B．Windows help to save energy by letting light in.
C．Windows help to save energy by providing heat.
D．Windows enable people to have contact with the outside world.
第3题
根据以下材料，回答题
Better Solar Energy Systems: More Heat， More Light
Solar photovoltaic thermal energy systems， or PVTs， generate both heat and electricity， but__________ （51） now they haven"t been very good at the heat-generating part compared to a stand-alone solar thermal collector. That"s because they operate at low temperatures to cool crystalline silicon solar cells，__________ （52） lets the silicon generate more electricity but isn"t a very efficient way to gather heat.
That"s a problem of economics. Good solar hot-water systems can harvest much more energy than a solar-electric system at a substantially lower__________（53）. And it"s also a space problem: photovoltaic cells can__________ （54） up all the space on the roof， leaving little room for thermal applications.
In a pair of studies， Joshua Pearce， an associate professor of materials science and engineering，has devised a__________ （55） in the form. of a better PVT made with a different kind of silicon.
His research collaborators are Kunal Girotra from Thin Silicon in California and Michael Pathak and Stephen Harrison from Queen"s University， Canada.
Most solar panels are made with crystalline silicon， but you can also make solar cells out of amorphous silicon， commonly known__________ （56） thin-film silicon. They don"t create as much electricity， but they are lighter， flexible， and cheaper. And， because they__________ （57） much less silicon， they have a greener footprint. __________ （58）， thin-film silicon solar cells are vulnerable to some bad-news physics in the form. of the Staebler-Wronski effect.
"That means that their efficiency drops when you __________（59） them to light——pretty much the worst possible effect for a solar cell，" Pearce explains， which is one of the__________ （60） thin-film solar panels make up only a small fraction of the market.
However， Pearce and his team found a __________（61） to engineer around the Staebler-Wronski effect by incorporating thin-film silicon in a new __________（62） of PVT. You don"t have to cool down thin-film silicon to make it work. In fact， Pearce"s group discovered that by heating it to solar-thermal operating temperatures， near the boiling__________ （63） of water， they could make thicker cells that largely __________（64） the Staebler-Wronski effect. When they applied the thin-film silicon directly to a solar thermal energy collector， they also found that by baking the cell once a day， they__________ （65） the solar cell"s electrical efficiency by over 10 percent.
回答（51）题 查看材料
A.until
B.unless
C.when
D.if
第4题
根据下面材料，回答题。
Women in Job Market
Women are also underrepresented in the administration and this is because there are so few women full professors. In 1985, Regent Beryl Milbum produced a report blasting the University of Texas System administration for not encouraging Women. The University was rated among the lowest for the system. In a 1987 update, Milbum commended the progress that was made and called for even more improvement.
One of the positive results from her study was a System-wide program to inform. women of available administrative jobs.
College of Communication Associate Dean Patrica Witherspoon, said it is important that woman be flexible when it comes to relocating if they want to rise in the ranks.
Although a woman may face a chilly climate on campus, many times in order for her to succeed, she must rise above the problems around her and concentrate on her work.
Until women make up a greater percentage of the senior positions in the University and all academia, inequities will exist.
"Women need to spend their energies and time doing scholarly activities that are important here at the University." Spirduso said. "If they do that will be successful in this system.If they spend their time in little groups mourning the sexual discrimination that they think exists here, they are wasting valuable study time."
According to Spirduso， women need to __________. 查看材料
A.produce a report on sexual discrimination
B.call for further improvement in their working conditions
C.spend their energies and time fighting against sexual discrimination
D.spend more time and energy doing scholarly activities
第5题
Science and Truth
"FINAGLE" (欺骗)is not a word that most people associate with science. One reason is that the image of the scientist is of one who always__________ (51) data in an impartial (不偏不倚的) search for truth. In any debate --_________(52) intelligence,schooling,energy -- the phrase "science says" usually disarms opposition.
But scientists have long acknowledged the existence of a "finagle factor'—a tendency by many scientists to give a helpful change to the data to__________ (53)desired results. The latest of the finagle factor in action comes from Stephen Jay Gould, a Harvard biologist, who has__________ (54) the important 19th century work of Dr.Samuel George Morton. Morton was famous in his time for analysing the brain__________ (55) of the skulls as a measure of intelligence. He concluded that whites had the largest brains, that the brains of Indians and blacks were smaller, and __________ (56), that whites constitute a superior race.
Gould went back to Morton's original data and concluded that the__________ (57)were an example of the finagle at work. He found that Morton's "discovery" was made by leaving out embarrassing data, __________ (58) incorrect procedures, and changing his criteria -- again, always in favour of his argument. Morton has been thoroughly discredited by now and scientists do not believe that brain size reflects __________ (59).
But Gould went on to say Morton's story is only an example of a common problem in __________ (60) work. Some of the leading figures in science are__________ (61) to have used the finagle factor. Gould says that Isaac Newton fudged out (捏造) to support at least three central statements that he could not prove. And so __________ (62)Laudius Ptolemy, the Greek astronomer, whose master work, Almagest, summed up the case for a solar system that had the earth as its centre. Recent__________ (63)indicate that Ptolemy either faked some key data or resorted heavily to the finagle factor.
All this is import.ant because the finagle factor is still at work. For example, in the artificial sweetener controversy, for example, it is__________ (64) that all the studies sponsored by the sugar industry find that the artificial sweetener is unsafe, __________ (65) all the studies sponsored by the diet food industry find nothing wrong with it.
第 51 题
A．collects
B．invents
C．misuses
D．enables
第6题
Science and Truth
"FINAGLE" (欺骗) is not a word that most people associate with science, One reason is that the image of the scientist is of one who always(51)data in an impartial (不偏不倚的) search for truth. In any debate—(52)intelligence, schooling, energy—the phrase "science says" usually disarms opposition.
But scientists have long acknowledged the existence of a "finagle factor"—a tendency by many scientists to give a helpful change to the data to(53)desired results. The latest of the finagle factor in action comes from Stephen Jay Gould, a Harvard biologist, who has(54)the important 19th century work of Dr, Samuel George Morton, Morton was famous In his time for analysing the brain(55)of the skulls as a measure of intelligence, He concluded that whites had the largest brains, that the brains of Indians and blacks were smaller, and(56), that whites constitute a superior race.
Gould went back to Morton's original data and concluded that the(57)were an example of the finagle at work. He found that Morton's "discovery" was made by leaving out embarrassing data,(58)Incorrect procedures, and changing his criteria m again, always, in favour of his argument. Morton has been thoroughly discredited by now and scientists do not believe that brain size reflects(59).
But Gould went on to say Morton's story is only an example of a common problem in(60)work. Some of the leading figures in science are(61)to have used the finagle factor. Gould says that Isaac Newton fudged out (捏造) to support at least three central statements that he could not prove. And so(62)Laudius Ptolemy, the Greek astronomer, whose master work, Almagest, summed up the case for a solar system that had the earth as its centre. Recent(63)indicate that Ptolemy either faked some key data or resorted heavily to the finagle factor.
All this is important because the finagle factor is still at work. For example, in the artificial sweetener controversy, for example, it is(64)that all the studies sponsored by the sugar industry find that the artificial sweetener is unsafe,(65)all the studies sponsored by the diet food industry find nothing wrong with it.
A．collects
B．invents
C．misuses
D．enables
第7题
Where do these ideas come from？ Max Luscher from the University of Geneva believes that in the beginning life was dictated by two factors beyond our control: night and day. Night brought passivity, and a general slowing down of metabolism; day brought with it the possibility of action, and increase in the metabolic rate, thus providing us with energy and initiative. Dark blue, therefore, is the color of quiet and passivity, bright yellow, the color of hope and activity.
In prehistoric times, activity as a rule took one of two forms: either we were hunting and attacking, or we were being hunted and defending ourselves against attack. Attack is universally represented by the color red; self-preservation by its complement green.
In Luscher's view, the association of colors with feeling and attitudes can be traced back to ______.
A．the association of day and night with passivity and action in ancient time
B．the association of black with funerals in western Europe
C．the association of white with purity in some countries
D．the association of red with joy in China
第8题
Calories
For years now, calories have been all the rage-people are counting them and cutting them, and you'd be hard-pressed to find something at the supermarket that does not list its calories per serving somewhere on the package. But have you ever wondered what exactly a calorie is？
What is a Calorie
A calorie is a unit of energy. We tend to associate calories with food, but they apply to anything containing energy. For example, a gallon (about 4 liters) of gasoline contains about 31,000,000 calories.
Specifically, a calorie is the amount of energy, or heat, it takes to raise the temperature of 1 gram of water 1 degree Celsius (1.8 degrees Fahrenheit). One calorie is equal to 4. 184 joules, a common unit of energy used in the physical sciences. Most of us think of calories in relation to food, as in "This can of soda has 200 calories." It turns out that the calories on a food package are actually kilocalories (1,000 calories = 1 kilocalorie). The word is sometimes capitalized to show the difference, but usually not. A food calorie contains 4,184 joules. A can of soda containing 200 food calories contains 200,000 regular calories, or 200 kilocalories. A gallon of gasoline contains 31,000 kilocalories.
The same applies to exercise — when a fitness chart says you burn about 100 calories for every mile you jog, it means 100 kilocalories. For the duration of this article, when we say "calorie," we mean "kilocalorie."
What Calories Do
Human beings need energy to survive — to breathe, move, pump blood — and they acquire this energy from food.
The number of calories in a food is a measure of how much potential energy that food possesses. A gram of carbohydrates(碳水化合物) has 4 calories, a gram of protein has 4 calories, and a gram of fat has 9 calories. Foods are a compilation (集合) of these three building blocks. So if you know how many carbohydrates, fats and proteins are in any given food, you know how many calories, or how much energy, that food contains.
If we look at the nutritional label on the back of a packet of maple-and-brown-sugar oatmeal, we find that it has 160 calories. This means that if we were to pour this oatmeal into a dish, set the oatmeal on fire and get it to burn completely (which is actually pretty tricky), the reaction would produce 160 kilocalories (remember: food calories are kilocalories) — enough energy to raise the temperature of 160 kilograms of water 1 degree Celsius. If we look closer at the nutritional label, we see that our oatmeal has 2 grams of fat, 4 grams of protein and 32 grams of carbohydrates, producing a total of 162 calories (apparently, food manufacturers like to round down). Of these 162 calories, 18 come from fat (9 cal × 2g), 16 come from protein(4 cal × 4g) and 128 come from carbohydrates (4 cal × 32g).
Your Calorie Needs
Just how many calories do our cells need to function well？ The number is different for every person. You may notice on the nutritional labels of the foods you buy that the "percent daily values" are based on a 2,000 calorie diet — 2,000 calories is a rough average of what a person needs to eat in a day, but your body might need more or less than 2,000 calories. Height, weight, gender, age and activity level all affect your caloric needs. There are three main factors involved in calculating how many calories your body needs per day:
•Basal metabolic rate (基本新陈代谢率)
•Physical activity
•Thermic (热的) effect of food
Your basal metabolic rate (BMR) is the amount of energy your body needs to function at rest. This accounts for about 60 to 70 percent of calories burned in a day and includes the energy required to keep the heart beating, the lungs breathing, the kidneys functioning and the body temperature stabilized. In general, men have a higher BMR than women.
A．Y
B．N
C．NG
第9题
Evolution is mostly to blame. It has designed mankind to cope with deprivation, not plenty. People are perfectly tuned to store energy in good years to see them through lean ones. But when bad times never come, they are stuck with that energy, stored around their expanding bellies.
Thanks to rising agricultural productivity, lean years are rarer all over the globe. Modernday Malthusians, who used to draw graphs proving that the world was shortly going to run out of food, have gone rather quiet lately. According to the UN, the number of people short of food fell from 920m in 1980 to 799m 20 years later, even though the world's population increased by 1.6 billion over the period. This is mostly a cause for celebration. Mankind has won what was, for most of his time on this planet, his biggest battle: to ensure that he and his offspring had enough to eat. But every silver lining has a cloud, and the consequence of prosperity is a new plague that brings with it a
host of interesting policy dilemmas.
As a scourge of the modern world, obesity has an image problem. It is easier to associate with Father Christmas than with the four horses of the apocalypse. But it has a good claim to lumber along beside them, for it is the world's biggest public-health issue today—the main cause of heart disease, which kills more people these days than AIDS, malaria, war; the principal risk factor in diabetes; heavily implicated in cancer and other diseases. Since the World Health Organisation labelled obesity an "epidemic" in 2000, reports on its fearful consequences have come thick and fast.
Will public-health warnings, combined with media pressure, persuade people to get thinner, just as they finally put them off tobacco？ Possibly. In the rich world, sales of healthier foods are booming (see survey) and new figures suggest that over the past year Americans got very slightly thinner for the first time in recorded history. But even if Americans are losing a few ounces, it will be many years before the country solves the health problems caused by half a century's dining to excess. And, everywhere else in the world, people are still piling on the pounds. That's why there is now a consensus among doctors that governments should do something to stop them.
The author write this passage mainly to ______.
A．bring up some warnings.
B．tell the reader some new facts.
C．discuss a solution to a problem.
D．persuade the reader to keep fit.
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