In summer, millions of people will head for the beach．And while the ocean can be
题型：不详难度：来源：
“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland．“There is certainly a lot of energy in waves．”
Scientists are working on using that energy to make electricity．
Most waves are created when winds blow across the ocean．“The winds start out by making little ripples （波纹） in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ”Taylor said．“Waves are one of nature’s ways of picking up energy and then
sending it off on a journey．”When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a l
arge wheel called a turbine （涡轮） ．The turbine can then power an electrical generator （发电机） ．The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland．
The resource is huge．We will never run out of wav
e power, besides, wave energy does not create 
the same pollution as other energy sources, such as oil and coal．Oceans cover three quarters of the earth’s surface．That would make wave power seem perfect for creating energy around the world．There are some drawbacks, however．
Jamie Taylor said that wave power still cost too much money．He said that its effects on animals in the sea were still unknown．Plus, wave power would get in the way of fishing and boat traffic．
With more research, however, “many of these problems might be overcome,” Taylor said．“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world．Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day．”
In the future, when you turn on a light switch, an ocean wave could be providing the electricity!
小题1:Which of the following is NOT true?
| A．Wave power doesn’t cost too much money． |
| B．Wave energy is so clean that it doesn’t create the same amount of pollution as other energy sources． |
| C．Wave power affects fishing and boat traffic． |
| D．Wave power may affect marine animals． |
| A．finding more new energy sources is not necessary because of wave energy |
| B．wave energy is a resource that will never run out and is used all over the world |
| C．wave power is not quite perfect for creating energy around the world |
| D．wave power doesn’t create any pollution |
| A．regrets | B．adventures | C．disadvantages | D．difficulties |
| A．How to Get Electricity by Waves | B．The advantages of Wave Energy |
| C．Can Waves Make Electricity? | D．The Disadvantages of Wave Energy |
答案
小题1:A
小题1:C
小题1:C
小题1:C
解析
举一反三
nowing the 7 . Their sense of time does not 8 information from the outside world; it is, so to speak, inside them, a kind of “inner clock”.This 9 may not seem to be very important. However, it was later found that not just plants but also 10 , including man, have this “inner clock” which 11 the working of their bodies and influences their activities. Men, then, are also influenced by this mysterious 12 . Whether we wish it or not, it affects such things in our life as our need for sleep, our need for food.
In the past, this did not really 13 because people lived in natural condition. In
the 14 world, things are different; now there are spacemen, airplane pilots and, in ordinary life, a lot of people who have to work at night. It would be very 15 , then, to know more about the “inner clock”. Such things as flowers might help us understand more about ourselves.| 小题1: |
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This finding suggests that taking steps to prevent northern forest to limit the release of greenhouse gases may warm the climate in northern regions. Usually large fires destroyed forests in these areas over the past decade. Scientists predict that with climate warming, fires may occur more frequently over next several centuries as a result of a longer fire season. Sunlight taken in by the earth tends to cause warming, while heat mirrored back into space tends to cause cooling.
This is the first study to analyze all aspects of how northern fires influence climate. Earlier studies by other scientists have suggested that fire in northern regions speed up climate warming because greenhouse gases from burning trees and plants are released into the atmosphere and thus trap heat.
Scientists found that right after the fire, large amounts of greenhouse gases entered the atmosphere and caused warming. Ozone（臭氧）levels increased, and ash from the fire fell on far-off sea ice, darkening the surface and causing more radiation from the sun to be taken in. The following spring, however, the land within the area of the fire was brighter than before the fire, because fewer trees covered the ground. Snow on the ground mirrored more sunlight back into space, leading to cooling.
“We need to find out all possible ways to reduce the growth of greenhouse gases in the atmosphere.” Scientists tracked the change in amount of radiation entering and leaving the climate system as a result of the fire, and found a measurement closely related to the global air temperature. Typically, fire in northern regions occurs in the same area every 80 to 150 years. Scientists, however, found that when fire occurs more frequently, more radiation is lost from the earth and cooling results. Specifically, they determined when fire returns 20 years earlier than predicated, 0.5 watts per square meter of area burned are soaked up by the earth from greenhouse gases, but 0.9 watts per square meter will be sent back into space. The net effect is cooling. Watts are used to measure the rate at which energy is gained or lost from the earth.
小题1:According to the new findings, taking steps to prevent northern forest fires may _______.
| A．result in a warming climate |
| B．cause the forest fires to occur more frequently |
| C．lead to a longer fire season |
| D．protect the forests and the environment there |
| A．large amounts of greenhouse gases enter the atmosphere |
| B．the levels of ozone which is a type of oxygen increase |
| C．snow on the ground mirrors more sunlight back into space |
| D．ashes from the fire fall on the ice surface and take in more radiation from the sun |
| A．analyze all aspects of how northern fires influence climate |
| B．indicate that forest fires will pollute the atmosphere |
| C．suggest that people should take measures to protect environment |
| D．suggest that the fires will speed up climate warming |
| A．released | B．absorbed | C．created | D．distributed |
| A．warm the climate as the supposition goes |
| B．allow more snow to reflect more sunlight into space and thus cool the climate |
| C．destroy large areas of forests and pollute the far-off sea ice |
| D．help to gain more energy rather than release more energy |
People tend to live up to expectations．We get out of life just about what we put into it．Our environment becomes a mirror of our spirit, our attitude, and expectations．If we set a great goal, we get great results．If we have a fair goal, we accomplish fair results, and if we have a poor goal, we accomplish poor results．The world will give you back what you expect, so expect the very best．Don"t be defensive or doubtful．Nothing changes unless you do．Before you can do something, you"ve got to be something．Know that you have worth and value．Show that to the world．
Treat everyone you come in contact with as the most important person in life．It will build self-esteem （自尊心）．Smile! You"ll be rewarded with a returned smile．Don"t react to others rudely．Forgive everyone who ever hurt you．Then, forgive yourself．Keep yourself healthy．Exercise．Eat a proper diet．Display an attitude of confidence．
Develop these good habits and your expectancy will be rewarded by successes．This attitude will put you into that group of people who are truly successful, because you will know and understand how an expectant attitude enhances （提高） every aspect of your life．
小题1:According to the author, we are likely to achieve success if we____．
| A．take a positive attitude |
| B．hold on to our dreams |
| C．have a good opportunity |
| D．show gratitude every day |
| A．success mainly depends on your efforts |
| B．our environment reflects what we think |
| C．the greater our goal, the better results we will get |
| D．it is our determination that decides our future |
| A．building self-esteem is important |
| B．we should treat everyone else fairly |
| C．if treated kindly, others are friendly |
| D．it makes good sense to forgive others |
| A．share his view point about life |
| B．offer advice on confidence building |
| C．suggest some ways to acquire success |
| D．stress the importance of positive attitude |
Whichever theory it may be, studies find, the cells have a poor grasp of longer interval．Time does seem to slow during an empty afternoon and race when the brain focuses on challenging work．Stimulants （兴奋剂）, including caffeine, tend to make people feel as if．time is passing faster; complex jobs, like doing taxes, can seem to drag on longer than they actually do．And emotional events — a breakup, a promotion, a transformative trip abroad —tend to be sensed as more recent than they actually are, by months or even years．In short, some psychologists say, the findings support the philosopher Martin Heidegger" s observation that time "persists merely as a consequence of the events taking place in it．"
Now researchers are finding that the opposite thing may also be true: if very few events come to mind, then the sense of time does not persist; the brain shortens the interval that has passed．
In one classic experiment, a French explorer named Michel Siffre lived in a cave for two months, cut off from the rhythms of night and day and man-made clocks．He appeared then, convinced that he had been isolated for only 25 days．Left to its own devices, the brain tends to shorten time．
In earlier work, researchers found that a similar case at work in people’s judgment of intervals that last only moments．Relatively infrequent stimuli, like flashes or tones, tend to increase the speed of the brain" s internal pacemaker．
On an obvious level, these kinds of findings offer an explanation for why other people" s children seem to grow up so much faster than one"s own．Involved parents are all too well aware of first step in their own children; however, seeing a cousin"s child once every few years, without bothering memories, shortens the time．
小题1:What can we infer from the first paragraph?
| A．Scientists have agreed about how the brain records time． |
| B．Scientists all think that some cells record the intervals of time． |
| C．Scientists haven"t agreed on how the brain records time． |
| D．Scientists all hold the theory that neural processes are an inside clock． |
| A．make the intervals of time long |
| B．make the intervals of time short |
| C．keep a state of rest |
| D．stop working |
| A．Michel Siffre didn" t think he had stayed in the cave for as long as two months． |
| B．Parents tend to think their own children grow faster than others． |
C．Michel Diffre actually stayed in  the cave for twenty-five days． |
| D．Children usually bring bad memories to their parents． |
| A．Social news | B．Community activities |
| C．Science | D．Children s life |
After China"s first satellite into the Earth"s orbit in 1970 came four flights of unmanned Shenzhou spaceflight from 1999 to 2002．The country carried out its first one-piloted spaceflight in October．2003, making China the third country in the world to have independent human spaceflight ability after the Soviet Union and the United States．Then came another breakthrough on October 12, 2005．
when Shenzhou 6, China"s second human spaceflight, was launched, with a crew of two astronauts．What"s more, the landmark （里程碑 ）spacewalk done by Zhai Zhigang, one of the three boarding Shenzhou 7, launched on Sept．25, 2008, leads the country further in its space exploration．Meanwhile, China"s moon exploration project, started in 2004, has also been progressing satisfactorily. Fifty years after the Soviet Union launched Sputnik, the world"s first man-made satellite, China"s first circumlunar（绕月的 ）satellite Chang’e 1 took off on Oct．24, 2007, which became the third landmark in China"s space achievements after the above-mentioned manned flights．Change 1 was expected to fulfill four scientific goals, one of which was to explore mineral elements on the moon, especially those not existent on the Earth. It"s said that the lunar regolith （月壤 ） is abundant in helium-3, a clean fuel that may support the Earth"s energy demands for more than a century．Nearly 3 years later, Oct．1, 2010 witnessed the launching of Chang"e 2, China"s 2nd unmanned lunar probe, marking another step forward in moon exploration．This time the aim is to test the key techniques of Chang"e 3 and Chang"e 4, as a preparation for a soft lunar landing in the future．
With great expectations, people all over the world are looking forward to China"s greater space achievements．
小题1:According to the text, which of the following is TRUE?
| A．China sent its first satellite into the Moon"s orbit in 1970． |
| B．China is the third country in Asia to make human spaceflight． |
| C．By now, 5 astronauts have made successful spaceflight by Shenzhou spaceship． |
| D．The launching of Chang"e 1 became the third landmark in China"s space achievements． |
A．landmark spacew alk | B．manned Shenzhou spaceflight |
| C．first circumlunar satellite | D．unmanned Shenzhou spaceflight |
| A．China"s road to outer space has been very smooth for a long time |
| B．the lunar regolith is believed to be poor in a clean fuel called helium-3 |
| C．China"s scientists are researching into techniques for soft lunar landing |
| D．China"s lunar exploration project was started in 2004 and completed in 2007 |
| A．Ancient Chinese"s Dream | B．The World"s Great Expectations |
| C．China"s Moon Exploration | D．China s Major Space Achievements |
| A．negative | B．positive |
| C．discouraged | D．uninterested |
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