New crime prediction software should reduce not only the murder rate, but the rate of other crimes. Developed by Richard Berk, a professor at the University of Pennsylvania, the software has already used in Baltimore and Philadelphia to predict which individuals on probation(缓刑) or parole(假释) are most likely to murder and to be murdered.
“When a person goes on probation or parole he is supervised(监督) by an officer. The question is ‘what level of supervision is appropriate?’” said Berk. It used to be that parole officers used the person’s criminal record, and their judgment to make decisions.
“This research replaces those seat-of-the –pants calculations,” he said.
Technology helps determine level of supervision. On average there is one murder for every 100,000 people. Even among high-risk groups the murder rate is one in 100. Predicting such a rare event is very difficult, but advances in computer technology works.
Years ago, the researchers made a dataset of more than 60,000 various crimes. Using the software they developed, they found some much more likely to commit murder when paroled or probated. They could identify eight future murderers out of 100.
Berk’s software examines roughly two dozen variables(可变因素), from criminal record to geographic location. The type of crimes, and more importantly, the age at which that crime was committed, were two of the most predictive variables.
“People assume that if someone murdered then they will murder in the future,” said Berk. “ What really matters is what that person did as a young individual. Predicting future crimes sounds well. But we aren’t anywhere near being able to do that.”
“Berk’s scientific answer leaves policymakers with difficult questions. By labeling one group of people as high risk, and supervise them closely, there should be fewer murders, which the potential victims should be happy about. It also means that those high-risk individuals will be supervised more aggressively. For human rights advocates, that means punishing people who, most likely, will not commit a crime in the future,” said Bushway. “It comes down to a question of whether you would rather make these errors or those errors.”The underlined words(in Para.3) probably mean___.
| A．calculations based on subjective opinions |
| B．calculations based on widespread voting |
| C．calculations made by advanced technology |
| D．calculations based on serious considering |
For 650 people with crime records, how many potential murderers would the software find?
| A．6.5. | B．13. | C．52. | D．65. |
From Para 7, we can infer that______.
| A．the technology developed by Richard Berk will soon be widely used in the US |
| B．the technology would not be widely accepted in the short term |
| C．whether a person murders or not largely decided by his upbringing while young |
| D．if a person murdered when he was fifty, he is sure to murder again while on probation |
Bushway’s attitude to the technology put forward by Richard Berk is ____.
| A．positive | B．negative | C．objective | D．indifferent |
Which would be the best title for the passage?
| A．Closely Supervise Potential Murders |
| B．Measures Taken to Prevent Criminal Behavior |
| C．Technology Revolutionizes Judges’ Way of Working |
| D．Software is Developed to Predict Criminal Behavior |
“Soon, you’re going to have to move out!” cried my neighbor upon seeing the largest tomato plant known to mankind, or at least known in my neighborhood.
One tiny 9-inch plant, bought for $1.25 in the spring, has already taken over much of my rose bed, covering much of other plants, and is well on its way to the front door.
Roses require a good deal of care, and if it weren’t for the pleasure they give, it wouldn’t be worth the work. As it is, I have a garden full of sweet-smelling roses for most of the year. Bushes must be pruned(剪枝) in early spring, leaving ugly woody branches until the new growth appears a few weeks later. It was the space available in the garden that led me into planting just one little tomato plant. A big mistake.
Soil conditions made just perfect for roses turn out to be even more perfect for tomatoes. The daily watering coupled with full sun and regular fertilizing (施肥) have turned the little plant into a tall bush. The cage I placed around it as the plant grew has long disappeared under the thick leaves.
Now the task I face in harvesting the fruit is twofold; First, I have to find the red ones among the leaves, which means I almost have to stand on my head, and once found I have to reach down and under, pick the tomatoes and withdraw(缩回) my full fist without dropping the prize so dearly won. I found two full-blown white roses completely hidden as I picked tomatoes in June. But they were weak and the leaves already yellow for lack of light.
Here I am faced with a painful small decision: To tear up a wonderful and productive tomato plant that offers up between ten and twenty ripe sweet tomatoes each day or say goodbye to several expensive and treasured roses. Like Scarlett in Gone With the Wind, I’ll think about that tomorrow.What are the requirements for the healthy growth of rose?
| A．Frequent pruning and fertilizing. | B．A lot of care and the right soil. |
| C．Tomato plants grown alongside. | D．Cages placed around the roots. |
The writer planted the tomato because _________.
| A．there was room for it in the garden |
| B．the soil was just right for it |
| C．it cost only $1.25 |
| D．the roses’ branches needed to be covered |
This year the writer’s roses were __________.
| A．removed from the rose bed |
| B．largely hidden under the tomato plant |
| C．mostly damaged by too much sunlight |
| D．picked along with the tomatoes |
By saying “the prize so dearly won” in paragraph 5, the writer wants to ________.
| A．express her liking for the roses |
| B．show the hardship of growing the roses |
| C．show the difficulty in picking the tomatoes |
| D．express her care for the tomatoes |
In the situation described in the text, one good thing is that ________.
| A．the writer has a daily harvest of tomatoes |
| B．the roses cost the writer little money |
| C．someone will help the writer make the decision |
| D．the writer can now enjoy both the roses and tomatoes |
New York City schoolchildren can’t use cellphones at school because of Mayor Michael R. Bloomberg’s ban on cellphones in schools. Many parents are opposed to Mayor Michael R. Bloomberg’s ban on cellphones in schools by e-mail messages.
There was a 13-year-old student who was shot with a gun after school, unable to call his mother for help. There was a high school student robbed three times last year, twice in her school building. There was a girl who got a piece of glass placed in her eye during school and was saved from a possible cornea transplant (角膜移植) only because, having disobeyed the cellphone ban, she was able to call her mother and get an operation on time.
The ban has been on for years, but it set off a widespread parental outcry only in April, after some headmasters sent home letters reminding parents that cellphones are not allowed to be brought into school.
Mr Bloomberg has defended the ban, saying that cellphones are bad and often used to cheat or call in friends for fights. If something is important, he says, parents can call schools directly.
On the other hand, many of the e-mail messages from parents described the ban as “cruel and heartless”, “absurdly(荒谬地) wrong-headed”, “anti-parent”, “ridiculous”.
“We respect the fears that parents have,” David Cantor, a spokesman for Schools Minister Joel I. Klein said, “but after all the fact is that having phones in schools always leads to more problems.”A 13-year-old student was shot with a gun after school, unable to call his mother for help, because ____.
| A．his mother had no cellphone |
| B．his mother wasn’t at home |
| C．he didn’t take a cellphone with him |
| D．he was too frightened to call |
From the fifth paragraph we can see many parents _________ the ban.
| A．agreed to | B．thought highly of |
| C．supported | D．were opposed to |
According to what the spokesman said, the school might _______.
| A．call off the ban |
| B．continue the ban |
| C．thank the parents |
| D．allow some students to use cellphones at school |
Some of Man's closest relatives in the animal kingdom are under serious threat because of human activity, according to a recently published report.
Almost one in three of all apes and monkeys are now considered to be in danger of dying out and disappearing from our planet, if action is not taken soon.
The report, which was produced for the World Conservation Union (WCU), shows that 114 of the world's 394 kinds could be lost forever, and the main reason they are threatened is the continuing loss of forests where most of these animals live. In addition, illegal wildlife trade, climate change and commercial（商业的）hunting for meat are also endangering them.
What's more, the problem is getting worse. The number of species on the organization’s Red List has increased by 3 to 25 since 2005.
Russell Mittermeier, the main researcher of the WCU report, said, "You could fit(安置) all the surviving members of these 25 species in a single football stadium. So the problem is obviously urgent."
The scientists, who drew up the Red List, believe that the situation is now so bad that if action is not taken immediately, it will result in primate(灵长目动物) species dying out - something which has not happened in over a century.
The loss of habitat caused by the clearing of forests for wood, farmland and fuel continues to be the main reason for the decreasing number of primates, according to the report, and the problem was most severe in Asia.
The loss of forest trees is also responsible for 20 percent of all greenhouse gases - more than all the cars, trucks, trains and airplanes in the world combined.What is the main subject of the report discussed in the text?
| A．Climate change. | B．Loss of animal habitat. |
| C．Animal protection. | D．Endangered animals |
How many animals were on the Red List in 2005?
| A．22 | B．19 | C．25. | D．28. |
The spokesman refers to 'a football stadium' in paragraph 5 to stress that ______.
| A．the animals enjoy playing sports |
| B．these animals should be placed there for protection |
| C．there are not many of these animals left |
| D．the report was announced there |
What is the main cause of the greenhouse gas problem according to the text?
| A．Airplanes. | B．Loss of trees. |
| C．Factory pollution. | D．Road vehicles. |
That cold January night, I was growing sick of my life in San Francisco. There I was, walking home at one in the morning after a tiring practice at the theatre. With opening night only a week ago, I was still learning my lines. I was having trouble dealing with my part-time job at the bank and my acting at night at the same time. As I walked, I thought seriously about giving up both acting and San Francisco. City life had become too much for me.
As I walked down empty streets under tall buildings, I felt very small and cold. I began running, both to keep warm and to keep away from any possible robbers. Very few people were still out except a few sad-looking homeless people under blankets.
About a block from my apartment, I heard a sound behind me. I turned quickly, half expecting to see someone with a knife or a gun. The street was empty. All I saw was a shining streetlight. Still, the noise had made me nervous, so I started to run faster. Not until I reached my apartment building and unlocked the door did I realize what the noise had been. It had been my wallet falling to the sidewalk.
Suddenly I wasn’t cold or tired anymore. I ran out of the door and back to where I’d heard the noise. Although I searched the sidewalk anxiously for fifteen minutes, my wallet was nowhere to be found.
Just as I was about to give up the search, I heard the garbage truck (垃圾车) pull up to the sidewalk next to me. When a voice called from the inside, “Alisa Camacho?” I thought I was dreaming. How could this man know my name? The door opened, and out jumped a small red-haired man with an amused look in his eye. “Is this what you’re looking for?” he asked, holding up a small square shape.
It was nearly 3 A.M. by the time I got into bed. I wouldn’t get much sleep that night, but I had gotten my wallet back. I also had gotten back some enjoyment of city life. I realized that the city couldn’t be a bad place as long as people were willing to help each other.How did the writer feel when she was walking home after work?
| A．Cold and sick | B．Disappointed and helpless |
| C．Satisfied and cheerful | D．Fortunate and helpful |
On her way home the writer _______.
| A．was robbed of her wallet by an armed man |
| B．was stopped by a garbage truck driver |
| C．lost her wallet unknowingly |
| D．found some homeless people following her |
In the fifth paragraph, why did the writer say she was dreaming?
| A．Someone offered to take her back home. |
| B．A red-haired man came to see her. |
| C．Her wallet was found in a garbage truck. |
| D．She heard someone call her name. |
From the text, we can infer that the writer _________.
| A．would stay on in San Francisco |
| B．would stop working at night |
| C．would make friends with cleaners |
| D．would give up her job at the bank |
Snow falls in the Earth’s extreme North and South throughout the year. However， the heaviest snowfalls have been reported in the mountains of other areas during winter. Snow is even known to fall near the Equator (赤道)，but only on the highest mountains.
Snow contains much less water than rain, but much of the water the world uses comes from snow. Melting snow provides water for rivers, electric power stations and agricultural crops. In the western United States, mountain snow provides up to seventy-five percent of all surface water supplies.
Snowfall helps to protect plants and some wild animals from winter weather. Fresh snow is made largely of air trapped among the snow crystals (晶体). Because the air has trouble moving, the movement of heat is limited. Snow also influences the movement of sound waves. The surface of the snow takes in, or absorbs, sound waves. As snow grows older or if there have been strong winds, it can become hard and flat. Then, the snow，s surface will help to send back sound waves.
Snow may be beautiful, but it can be deadly. It is responsible for the deaths of hundreds of people. Many people die in traffic accidents on roads covered with snow and ice or from being seriously stuck in the winter storm. Others die from heart attacks caused by too much physical activity out in the cold.
People may not be able to avoid living in areas where it snows often. However, they can avoid becoming victims of snowstorms. People should stop driving and stay at home until the storm has passed. People living in these areas should carry emergency supplies in their vehicle. These include food，emergency medical supplies，and extra clothing to stay warm and dry.Mountain snowfall _____.
| A．is heavier than that in the South and the North Poles |
| B．has never occurred near the Equator of the earth |
| C．brings less of the water the world uses than rain does |
| D．provides up to seventy—five percent of water supplies worldwide |
Snow protects plants and wild animals from cold weather by _____.
| A．supplying much more air | B．limiting heat movement |
| C．absorbing strong winds | D．sending back sound waves |
Snow can be deadly mainly because it can _____.
| A．cause road accidents |
| B．make people stuck in winter storms |
| C．lead to heart attacks |
| D．make people victims of snowstorms |
What will the text probably tell us following the last paragraph? _.
| A．How to drive during snowstorms |
| B．Where we can get emergency supplies |
| C．How to prevent heart attacks out in cold |
| D．Why we should stay warm and dry in winter |
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