Now,it’stimeforsomebriefnewsit-优题课

Over the last 70 years, researchers have been studying happy and unhappy people and finally found out ten factors that make a difference. Our feelings of well-being at any moment are determined to a certain degree by genes. However, of all the factors, wealth and age are the top two.
Money can buy a degree of happiness. But once you can afford to feed, clothe and house yourself, each extra dollar makes less and less difference.
Researchers find that, on average, wealthier people are happier. But the link between money and happiness is complex. In the past half-century, average income has sharply increased in developed countries, yet happiness levels have remained almost the same. Once your basic needs are met, money only seems to increase happiness if you have more than your friends, neighbors and colleagues.
“Dollars buy status, and status makes people feel better,” conclude some experts, which helps explain why people who can seek status in other ways-scientists or actors, for example-may happily accept relatively poorly-paid jobs.
In a research, Professor Alex Michalos found that the people whose desires-not just for money, but for friends, family, job, health-rose furthest beyond what they already had, tended to be less happy than those who felt a smaller gap (差距)。Indeed, the size of the gap predicted happiness about five times better than income alone. “The gap measures just blow away the only measures of income.” says Michalos.
Another factor that has to do with happiness is age. Old age may not be so bad“Given all the problems of aging, how could the elderly be more satisfied？”asks Professor Laura Carstensen.
In one survey, Carstensen interviewed 184 people between the ages of 18 and 94, and asked them to fill out an emotions questionnaire. She found that old people reported positive emotions just as often as young people, Some scientists suggest older people may expect life to be harder and learn to live with it, or they’re more realistic about their time running out, older people have learned to focus on things that make them happy and let go of those that don’t.
“People realize not only what they have, but also that what they have cannot last forever,” she says. “A goodbye kiss to a husband or wife at the age of 85, for example, may bring far more complex emotional responses than a similar kiss to a boy or girl friend at the age of 20.”
72.According to the passage, the feeling of happiness .
A.is determined partly by genes B.increases gradually with age
C.has little to do with wealth D.is measured by desires
72.Some actors would like to accept poorly-paid jobs because the jobs .
A.make them feel much better B.provide chances to make friends
C.improse their social position D.satisfy their professional interests
74.Aged people are more likely to feel happy because they are more .
A.optimistic B.successful C.practical D. emotional
75.Professor Alex Michalos found that people feel less happy if .
A.the gap between reality and desire is bigger B.they have a stronger desire for friendship
C.their income is below their expectation D.the hope for good health is greater

Dogs wag(摇摆) their tails in different directions depending on whether they are excited and wanting to move forward or threatened and thinking of moving back, a study has found.
Researchers in Italy examined the tail wagging behaviour of 30 dogs, catching their responses to a range of stimuli(刺激物) with video cameras. To conduct the study they chose 15 male dogs and 15 female ones aged between one and six years. The dogs were all family pets whose owners had allowed them to take part in the experiment at Bari University. The dogs were placed in a large wooden box with an opening at the front to allow for them to view various stimuli. They were tested one at a time.
The researchers led by Professor Giorgio Vallortigara of the University of Trieste found that when the dogs were shown their owners—a positive experience—their tails wagged energetically to the right side. When they were shown an unfamiliar human they wagged to the right, but with somewhat less enthusiasm. The appearance of a cat again caused a right-hand side wag, although with less intensity again. The appearance of a large unfamiliar dog, similar to a German shepherd, changed the direction of tail wagging to the left. Researchers supposed the dog was thinking of moving back. When the dogs were not shown any stimuli they tended to wag their tails to the left, suggesting they preferred company. While the changes in the tail wagging were not easily noticed without the aid of video, it was thought that the findings could help people judge the mood (心情) of dogs. Computer and video systems, for example, could be used by professional dog trainers to determine the mood of dogs that they were required to approach.
71.The video cameras were used to catch the dogs’ responses because .
A.it was easier to catch the dogs’ response changes in the tail wagging
B.the dogs were put in the wooden boxes and tested one at a time.
C.they enabled the dogs’ owners to know about their dogs’ habit
D.the dogs wagged their tails in different directions when they were in different moods
72.The underlined word “intensity” in the passage means .
A.surprise B.worry C.excitement D.interest
73.When there are no stimuli, a dog will .
A.wag to the left B.wag to the right
C.not wag at all D.wag to the left and then to the right
74.The underlined word “they” refers to .
A.the dogs B.the trainers C.the systems D.the researchers
75.The purpose of doing the experiment is .
A.to train dogs for their owners B.to help people judge the mood of dogs
C.to help dogs find company D.to help people choose their pet dogs

Scientists have found what look like caves on Mars(火星), and say they could be protecting life from the planet’s terrible environment.
The first caves discovered beyond the Earth appear as seven mysterious black dots on the pictures sent back by NASA’s Mars Odyssey orbiter. Each as large as a football field, they may be openings into natural caves below the Martian surface.
“If there is life on Mars, there is a good chance you’d find it in caves,” said Jut Wynne,one of the researchers who noticed the features while working on a US Geological Survey Mars Cave Detection Program.
Jonathan Clarke, a geologist with the Mars Society of Australia, yesterday described the discovery as exciting.
One photo taken at night by an infrared imager(红外线成像器) showed one hole to be unusually warm, suggesting hot air trapped during the day is flowing out.
“I said:‘Wow, that’s a cave’” Dr. Clarke said excitedly. “People have been looking for these for a long time; now we have found them.”
He agreed such caves would be perfect places to hunt for life escaping from the bitterly cold, radiation-soaked(充满辐射的), dry surface.
“Tiny drops of water could collect inside,” he said. “If there are gases coming out, they could provide energy for a whole range of bacteria. A cave is also a protection from radiation; the surface of Mars is exposed to high levels of space radiation.”
The caves probably formed when tube-shaped lave flows(管状岩浆流) spread across the planet long ago. The outside of the tubes cooled, forming solid walls, while something hotter inside allowed the remaining have to flow out, forming caves.
64.What does the passage mainly talk about?
A. How the caves were formed on Mars.
B. How scientists found these caves on Mars.
C. Caves on Mars may be full of hot air or a sign of life.
D. Scientists have completely recognized the surface of Mars.
65.We can learn from the passage that .
A. water has already been found on Mars
B. the scientists found all the caves at night
C.it is certain that there is life in these caves
D.the surface of Mars is bitterly cold, radiation-soaked and dry
66.According to the passage, Dr. Clarke was so excited because .
A.such caves could provide energy for life
B.they had finally found the caves on Mars
C.such caves would be perfect places to hunt for life
D.scientists had long been looking for these caves
67.Necessary conditions for life on Mars mentioned in the passage may include .
A.lava and energy B.water and radiation from space
C.gases and lava D.water and protection from radiation

Thinking

Some scientists claim that we humans are the only living things that are conscious(有意识的)-we alone are aware that we are thinking.
No one knows how consciousness works –it is one of science’s last great mysteries.
All your thoughts take place in the cerebrum(大脑皮质),which is at the top of your brain, and different kinds of thought are linked to different areas, areas, called association areas.
Each half of the cerebrum has four rounded ends called lobes(脑叶)-two at the front (frontal and temporal lobes)and two at the back (occipital and parietal lobes).
The frontal lobe is linked to your personality and it is where you have your bright ideas.
The temporal lobe is where you hear and understand what people say to you.
The occipital lobe is where you work out what your eyes see.
The parietal lobe is where you record touch, heat and cold, and pain.
The left half of the brain controls the right side of the body. The right half controls the left side.
One half of the brain is always dominant (in charge).Usually, the left brain is dominant, which is why 90% of people are right-handed.

68.Which part of your cerebrum is most active when you are making a telephone call?
A. The frontal lobe. B. The temporal lobe. C. The occipital lobe. D. The parietal lobe.
69.Which of the following statements is true?
A. One’s personality has something to do with the frontal lobe.
B. Bright ideas come from the parietal lobe.
C. The occipital and temperal lobes are at the back of the cerebrum.
D. The occipital lobe is in charge of sound.
70.From the passage, we know the reason why around 10% of people are left-handed is that _______.
A.their frontal lobe is usually dominant B.their temporal lobe is usually dominant
C.their right brain is usually dominant D.their left brain is usually dominant

What will people die of 100 years from now? If you think that is a simple question, you have not been paying attention to the revolution that is taking place in bio-technology(生物技术). With the help of new medicine, the human body will last a very long time. Death will come mainly from accidents, murder and war. Today's leading killers, such as heart diseases, cancer, and aging itself, will become distant memory.
In discussion of technological changes, the Internet gets most of the attention these days. But the change in medicine can be the real technological event of our times. How long can humans live? Human brains were known to decide the final death. Cells(细胞) are the basic units of all living things, and until recently, scientists were sure that the life of cells could not go much beyond 120 years because the basic materials of cells, such as those of brain cells, would not last forever. But the upper limits will be broken by new medicine. Sometime between 2050 and 2100, medicine will have advanced to the point at which every 10 years or so, people will be able to take medicine to repair their organs(器官). The medicine, made up of the basic building materials of life, will build new brain cells, heart cells, and so on---in much the same way our bodies make new skin cells to take the place of old ones.
It is exciting to imagine that the advance in technology may be changing the most basic conditional human existence, but many technical problems still must be cleared up on the way to this wonderful future.
56. According to the passage, human death is now mainly caused by _______.
A. diseases and aging B. accidents and war
C. accidents and agingD. heart diseases and war
57.In the author's opinon, today's most important advance in technology lies in _____.
A. medicineB. the internetC. brain cellsD. human organs
58. Humans may live longer in the future because ______.
A. heart disease will be far away from us B. human brains can decide the final death
C. the basic materials of cells will last forever D. human organs can be repaired by new medicine
59. We can learn from the passage that _____.
A. human life will not last more than 120 years in the future
B. human have to take medicine to build new skin cells now
C. much needs to be done before humans can have a longer life
D. we have already solved the technical problems in building new cells.