題目列表(包括答案和解析)
Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or, in summer, they may think it is the heat. However, the real reason lies inside their bodies. At that time – about eight hours after you wake up – your body temperature goes down. This is what makes you slow down and feel sleepy. Scientists have tested sleep habits in experiments where there was no night or day. The people in these experiments almost always followed a similar sleeping pattern (模式). They slept for one long period and then for one short period about eight hours later.
In many parts of the world, people take naps(小睡) in the middle of the day. This is especially true in warmer climates, where the heat makes work difficult in the early afternoon. Researchers are now saying that naps are good for everyone in any climate. A daily nap gives one a more rested body and mind and therefore is good for health in general. In countries where naps are traditional, people often suffer less from problems such as heart disease.
Many working people, unfortunately, have no time to take naps. Though doctors may advise taking naps, employers do not allow it! If you do have the chance, however, here are a few tips about making the most of your nap. Remember that the best time to take a nap is about eight hours after you get up. A short sleep too late in the day may only make you feel more tired and sleepy afterward. This can also happen if you sleep for too long. If you do not have enough time, try a short nap – even ten minutes of sleep can be helpful.
【小題1】Why do people feel sleepy in the early afternoon according to the text?
| A．They eat too much for lunch. |
| B．They sleep too little at night. |
| C．Their body temperature becomes lower. |
| D．The weather becomes a lot warmer. |
| A．About 12:30 pm. | B．About 1:30 pm. |
| C．About 3:30 pm | D．About 2:30 pm |
| A．Just for a Rest | B．All for a Nap |
| C．A Special Sleep Pattern. | D．Taking Naps in Warmer Climate. |
You want a smart phone， but just how smart do you want it？ How about one that can read your mind？ Well， that phone may well be on its way...
Justin Rattner， chief researcher at Intel， says that technology has developed to the point that “context-aware computing (情景感知計(jì)算)”， an idea that’s been around for twenty years， is becoming more of a reality.
That could lead to a phone that acts as a mind reader in your pocket. But rather than simply collect secrets about you， the device could do things with that information， such as predict what you might do next and make suggestions.
Rattner gave a few examples during his speech at Intel’s developer conference in San Francisco recently.
Among them is a software that Intel worked on with Fodor’s Travel， a traveling website. It learns what types of foods you like to eat and what types of places you like to visit， based on searches you type into the phone or places you searched using GPS (全球定位系統(tǒng)). The software makes similar recommendations when you visit a new city.
Tech companies are already working to predict what people want. Search engine Google， movie-rental service Netflix， and online radio service Pandora try to guess what people want even before they know they want it.
Putting those types of functions together with the other information that phones collect about people could pave the way for even more helpful mobile phones， Rattner said.
A challenge is training computers to look at data from “hard sensors (傳感器)” (which measure place， movement， temperature and the like) and combining those findings with data from “soft sensors” (such as calendar appointments and Web browsing history).
For example， your phone could tell that you have just left school and seem to be on your way home—a location it might know from your address book. It could then tell you the best route around traffic.
Rattner added that researchers are even making steps toward the final goal—a computer understanding of thoughts.
Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or, in summer, they may think it is the heat. However, the real reason lies inside their bodies. At that time – about eight hours after you wake up – your body temperature goes down. This is what makes you slow down and feel sleepy. Scientists have tested sleep habits in experiments where there was no night or day. The people in these experiments almost always followed a similar sleeping pattern. They slept for one long period and then for one short period about eight hours later.
In many parts of the world, people take naps(小睡) in the middle of the day. This is especially true in warmer climates(氣候), where the heat makes work difficult in the early afternoon. Researchers are now saying that naps are good for everyone in any climate. A daily nap gives one a more rested body and mind and therefore is good for health in general. In countries where naps are traditional (傳統(tǒng)的), people often suffer less from problem such as heart disease.
Many working people, unfortunately, have no time to take naps. Though doctors may advise taking naps, employers do not allow it! If you do have the chance, however, here are a few tips about making the most of your nap. Remember that the best time to take a nap is about eight hours after you get up. A short sleep too late in the day may only make you feel more tired and sleepy afterward. This can slao happen if you sleep for too long. If you do not have enough time, try a short nap – even ten minutes of sleep can be helpful.
Why do people feel sleepy in the early afternoon according to the text?
A. They eat too much for lunch.
B. They sleep too little at night.
C. Their body temperature becomes lower.
D. The weather becomes a lot warmer.
If you get up at 6:30 am, what is the best time for you to take a nao?
A. About 12:30 pm. B. About 1:30 pm.
C. About 2:30 pm D. About 3:30 pm
What would be the best title for the text?
A. Just for a Rest
B. All for a Nap
C. A Special Sleep Pattern.
D. Taking Naps in Warmer Climate.
Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or, in summer, they may think it is the heat. However, the real reason lies inside their bodies. At that time – about eight hours after you wake up – your body temperature goes down. This is what makes you slow down and feel sleepy. Scientists have tested sleep habits in experiments where there was no night or day. The people in these experiments almost always followed a similar sleeping pattern. They slept for one long period and then for one short period about eight hours later.
In many parts of the world, people take naps in the middle of the day. This is especially true in warmer climates, where the heat makes work difficult in the early afternoon. Researchers are now saying that naps are good for everyone in any climate. A daily nap gives one a more rested body and mind and therefore is good for health in general. In countries where naps are traditional, people often suffer less from problem such as heart disease.
Many working people, unfortunately, have no time to take naps. Though doctors may advise taking naps, employers do not allow it! If you do have the chance, however, here are a few tips about making the most of your nap. Remember that the best time to take a nap is about eight hours after you get up. A short sleep too late in the day may only make you feel more tired and sleepy afterward. This can slao happen if you sleep for too long. If you do not have enough time, try a short nap – even ten minutes of sleep can be helpful.
1.Why do people feel sleepy in the early afternoon according to the text?
A．They eat too much for lunch.
B．They sleep too little at night.
C．Their body temperature becomes lower.
D．The weather becomes a lot warmer.
2.If you get up at 6:30 am, what is the best time for you to take a nap?
A．About 12:30 pm. B．About 1:30 pm.
C．About 2:30 pm D．About 3:30 pm
3.What would be the best title for the text?
A．Just for a Rest B．All for a Nap
C．A Special Sleep Pattern. D．Taking Naps in Warmer Climate.
Batteries can power anything from small sensors to large systems．While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves．University of Missouri（MU） researchers are developing a nuclear energy source that is smaller, lighter and more efficient．
“To provide enough power, we need certain methods with high energy density（密度）”，said Jae Kwon, assistant professor of electrical and computer engineering at MU．“The radioisotope（放射性同位素） battery can provide power density that is much higher than chemical batteries．”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems （M/NEMS）．Although nuclear batteries can cause concerns, Kwon said they are safe．
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems．”
His new idea is not only in the battery’s size, but also in its semiconductor（半導(dǎo)體）．Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor．
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure（晶體結(jié)構(gòu)） of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem．”
Together with J．David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery．In the future, they hope to increase the battery’s power, shrink its size and try with various other materials．Kwon said that battery could be thinner than the thickness of human hair．
1.Jae Kwon gave examples in Paragraph 4_________．
A．to show chemical batteries are widely applied．
B．to introduce nuclear batteries can be safely used．
C．to describe a nuclear-powered system．
D．to introduce various energy sources．
2.According to Jae Kwon, his nuclear battery _______．
A．uses a solid semiconductor B．will soon replace the present ones．
C．could be extremely thin D．has passed the final test．
3.The text is most probably a ________．
A．science news report B．book review
C．newspaper ad D．science fiction
1-15 CDDCC CABDC BCBCC
16-35 CBBAC ADCAB CCBAB BCBCA
36-50 CABBB ACBAB CBDCD
51-55 BGEAD
【短文改錯(cuò)】
My brother Tom was very selfish when he was a little boy. He did not want ∧ share things
to
with other people. For example, when he buy a chocolate cake, he put them in a secret place
bought it
where I couldn’t find it. Then he ate it all by himself. He never helped other. He said he is busy.
others was
That is, a game of tennis making him very busy. He did not care if something he did made
made
people angry. For instance, one night he played strong and loudly music till four o’clock in the
loud
morning. But now he is difference. He often helps grandma with housework, helps mom with
different
cooking and helps his classmates with his lessons.
their
One possible version:
On a sunny day in April, we organized a community environmental program called “Love Our Community” in order to create a cleaner and more harmonious community.
In the morning, we went to clean the streets and wash the windows in the community. We swept up the fallen leaves and the rubbish, and put them into the dustbins. After that, we learned from an experienced gardener about how to trim trees and bushes. We carefully observed the gardener and then we did it by ourselves. In the afternoon, we gave a lecture about the environment for the residents of the community. They listened very carefully. Obviously, they liked our lecture very much. Meanwhile, we handed out environmental leaflets to passers-by in the community.
From this program, we have learned a lot about how to protect our environment and make
more people realize the significance of protecting the environment.
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