题目
题型：不详难度：来源：
Of course, one way to avoid these medical mysteries is to keep dangerous organisms out of the food supply. This is easier said than done, but scientists keep looking for new ways.
Scientists in the United States have developed an experimental system that uses a high-tech optical scanner. The system is designed to identify the presence of contaminants(致污物) like soil or animal waste on fresh produce. These can be sources of E. coli. E. coli bacteria naturally live in the intestines(肠) of humans and many animals. Most kinds of E. coli are harmless but some can make people sick.
The new scanner can also show damage and imperfections that might make the produce unappealing to shoppers.
Scientists designed the system at a Department of Agriculture research center in Beltsville, Maryland. Moon Kim of the Agricultural Research Service led the team.
MOON KIM: “We were requested, we were asked, to develop a method to detect contamination in produce. So we started with the apple as the model sample.”
The scanner uses a high-speed camera placed over the conveyer belt that moves the produce along. As the apples move along the belt, the scanner captures images of each piece of fruit.
Moon Kim says the team hopes the system will be available before long.
MOON KIM: “We are targeting for development in commercial plants for the next several years.”
The scanner can direct a sorting machine to separate the bad apples from the good ones. The system is currently able to show the surface of only half the apple as it speeds by. The inventers hope to improve the process so it can show the whole surface.
小题1:What is the main topic of the text?
| A．Bacteria. | B．A high-tech scanner. | C．A camera | D．Food safety. |
| A．broke out all over the world | B．comes from soil or animal waste |
| C．is extremely harmful to health | D．does not cause illness |
| A．can help to sort out different fruits |
| B．make the produce appeal to shoppers |
| C．can only capture images of the whole apple |
| D．can identify the presence of contaminants |
| A．The scanner needs to be improved. |
| B．The scanner will be available in the next several years. |
| C．Moon Kim is unwilling to develop the scanner. |
| D．The scanner is connected to a sorting machine. |
答案
小题1:B
小题2:B
小题3:D
小题4:A
解析
试题分析：欧洲一种罕见大肠杆菌的致命爆发引发了人们对食品安全问题的新的关注。在人们因为食品致病的一系列问题中，有一个最简单的问题却常常难于甚至无法回答，这就是，他们吃了什么导致生病？美国科学家开发了一种使用高科技光学扫描装置的实验性系统。这种检测系统针对于食品包装上市环节。希望这个新科技能真的成为食品安全的福音。
小题1:主旨大意题。综观全文可知本文主要介绍了这种高科技的扫描仪，故选B。
小题2:细节理解题。根据contaminants(致污物) like soil or animal waste on fresh produce. 故选B。
小题3:细节理解题。根据The system is designed to identify the presence of contaminants(致污物) like soil or animal waste on fresh produce.该系统用于识别新鲜农产品表面上的土壤或动物粪便等污染物，故选D。
小题4:推理判断题。根据The system is currently able to show the surface of only half the apple as it speeds by. The inventers hope to improve the process so it can show the whole surface.这种扫描仪有待于提高，故选A。
点评：主旨大意题主要是测试考生对一篇文章或一段文字的深层理解程度及在速读中准确把握文章大意的能力，一般针对某一语段或某一语篇主题标题或目的设题。做这类题，关键在于抓住文章要旨。
核心考点
试题【Europe’s deadly outbreak of a rare form of E. coli bacteria (大肠杆菌) has brought n】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Although considered an excellent form of exercise，jumping rope has never gained widespread acceptance because of two fundamental reasons．First，most people recognize jumping rope as an excellent form of cardiovascular (心血管的) exercise，but they also believe that it is simply too difficult．In other words，they don"t think they"ll be able to continue jumping for the near 20 minutes that it takes to achieve a beneficial physical result．Second, many view it as somewhat boring and too repetitive-not as something fun or enjoyable．
As a matter of fact，jumping rope can be great fun if you find a proper way to practise it．Instead of doing the usual two-foot bounce over and over again，people good at rope-jumping often change their pattern every 10 or 20 jumps．A single bounce，a double bounce，a skip，a knee-up，side swings，as well as a variety of other easy-to-learn free-style rope-jumping．
Now researchers are learning that jumping rope also prepares the brain for learning．It is an exercise allowing both brain hemispheres(半球)to perform in parallel(并行地)to each other．In short，jumping rope can be a life-long activity requiring little equipment，time and space，yet leading to a much healthier life．
小题1:From the first paragraph we learn that_______ ．
| A．all people now have more advanced equipment |
| B．jumping rope has disappeared from people"s memories |
| C．racing around the playground was preferred |
| D．people now like to have exercise in a gym |
| A．it benefits the cardiovascular system |
| B．it requires little equipment，time and space |
| C．it is neither easy nor enjoyable |
| D．it is considered boring |
| A．there are many ways to follow |
| B．the usual way should not be used |
| C．the easiest way is always the best |
| D．there is only one proper way to follow |
| A．only prepares the brain for learning. |
| B．is suitable for students only |
| C．helps both brain hemispheres work together |
| D．can be dangerous for old people |
| A．He is arguing against it. | B．He is sitting on the fence of it. |
| C．He is in favor of it. | D．He is not clear about it. |
People with the most social connections — spouses, friends, neighbors and relatives — were also the happiest, the data showed. “Each additional happy person makes you happier,” Christakis said.
“Imagine that I am connected to you and you are connected to others and others are connected to still others. It is this fabric of humanity, like an American patch quilt.”
Each person sits on a different colored patch. “Imagine that these patches are happy and unhappy patches. Your happiness depends on what is going on in the patch around you,” Christakis said.
“It is not just happy people connecting with happy people, which they do. Above and beyond, there is this contagious process going on.”
And happiness is more contagious than unhappiness, they discovered.
“If a social contact is happy, it increases the likelihood that you are happy by 15 percent, ” Fowler said. “A friend of a friend, or the friend of a spouse or a sibling (兄弟姐妹), if they are happy, increases your chances by 10 percent,” he added.
A happy third degree friend — the friend of a friend of a friend — increases a person’s chances of being happy by 6 percent.
“But every extra unhappy friend increases the likelihood that you’ll be unhappy by 7 percent,” Fowler said.
The finding is interesting and it is useful, too, Fowler said.
“Among other benefits, happiness has been shown to have an important effect on reduced mortality (死亡率), pain reduction, and improved cardiac (心脏的) function. So better understanding of how happiness spreads can help us learn how to develop a healthier society,” he said.
The study also fits in with other data suggested in 1984 that having $ 5,000 extra increased a person’s chances of becoming happier by about 2 percent.
“A happy friend is worth about $ 20,000,” Christakis said.
小题1:It can be inferred that________.
| A．happiness spreads as fast and widely as unhappiness |
| B．unhappiness spreads faster and more widely than happiness |
| C．happiness spreads faster and more widely than unhappiness |
| D．the spread of unhappiness has not been studied by researchers |
| A．Being in a party with a happy atmosphere. |
| B．A happy experience of your brother or your parents. |
| C．A happy trip to a foreign country of your friends. |
| D．Happiness of your friend’s friend. |
| A．A happy friend can help you bring in a wealth of $ 20,000. |
| B．A happy friend is a wealth which is worth about $ 20,000. |
| C．A happy friend increases your chances of being happy by 2%. |
| D．A happy friend increases your chances of being happy by 8 %. |
Then, about eight years ago, I got a much better job. The pay was better, but the hours were a lot longer. I bought a car and drove to work every day. I began to take people out to lunch. And I began to put on weight, too. I stopped playing tennis and going for long walks at weekends because I just didn’t have any time for things like that any more.
There’s a lot of stress in my job. Perhaps that’s why I started drinking more than I used to. For example, I used to have only half a glass of whisky when I got home, but then I started filling my glass to the top, and instead of having one glass, I would have several. I started smoking a lot, too. I never used to smoke at all.
Two months ago I had a heart attack. At first I just couldn’t believe it. Luckily it wasn’t very serious. The doctor advised me to stop smoking and to eat less. He also advised me to work less and get more exercise. But I just haven’t any time! My job takes everything out of me!
Sometimes I wonder if I should get another job. Perhaps I could do something as I used to. But if I do that, I won’t earn as much. I have a family to support. I have to think of them, too. I just don’t know what I should do. What do you think?
小题1:Compared with ten years ago, what is worse for the author now?
| A．His job. | B．His pay. |
| C．His means of transport. | D．His health. |
| A．He got higher pay. | B．His working hours weren’t long. |
| C．He found it very stressful. | D．He had little free time at weekends. |
| A．not to work any longer |
| B．to take a long vacation abroad |
| C．to stop smoking and take exercise |
| D．not to eat out any more |
| A．The author is not sure what he should do now. |
| B．The author has taken the doctor’s advice already. |
| C．The author has got another new job. |
| D．The author feels much better now. |
Without realizing it, Fred chanced to find an important new principle of psychological research: acting a part can help us feel the way we want to feel — more self-assured in a trying situation, more cheerful when things go wrong.
How can you put this principle to work in your own life? There’s more involved than simply mimicking a few expressions. You have to be systematic about it. Here’s how:
Smile to cheer yourself up.
Relax to reduce anxiety or fear.
Look your best to increase your self-confidence.
Keep cool in a crisis.
Using our bodies and actions to change the way we feel can be a useful tool in helping us through life’s difficult times. As novelist George Eliot wrote more than a century ago, “Our deeds determine us, as much as we determine our deeds.” People who remember that — and act upon it — can only be richer and happier for the experience.
小题1:In paragraph 1 the underlined phrase “to put on a false front” means ______.
| A．to wear a wrong coat |
| B．to act a part unsuccessfully |
| C．to show a pretended happy appearance |
| D．to put on airs |
| A．had very few spirits |
| B．had many spirits |
| C．was in bad mood |
| D．was in good mood |
| A．learning quickly |
| B．making faces |
| C．behaving well |
| D．imitating others |
| A．actions speak louder than words |
| B．the more we do, the happier we are |
| C．our feeling cannot change our behavior |
| D．actions are very important for us to beat bad moods for good |
In the past year, more than 15 laughter clubs have been set up across the country. People of all ages go to release their stress with an hour group laughs. “People telephoned me and said they have forgotten what it is to laugh. They want to find a place where they can escape all their problems for a while. So they come,” said 40—year—old Jocelyne Le Moan. She usually takes a class of around 60 people through a series of laughter techniques.
Her pupils range from teenagers to 70 years old, but most are middle---aged white collars seeking 60 minutes of relaxation at the end of a busy day. Le Moan takes them through the “Lion Laugh”and the “Laugh Contest”, where participants “speak”to each other in different ways. And instead of talking, they break into fits of laughter. At the end there are 15 minutes of “meditation”, when they lie on their backs and let the laughs burst out of their mouths.
“I love it. It’s an experience that has changed my life. Through it I rediscovered the child’s laugh inside me,”Said Romain Jouffroy, 24. “US President George W. Bush should give it a try. He has lost his laugh,”she joked . Like Jouffroy, many laughter club members find themselves changed into children again, and why not ? The average preschooler laughs up to 400 times a day.
The average adult only a day seven to 15.
The physical benefits of laughter are already well—recognized. Doctors say the act of laughing releases good chemicals into the blood—stream, while the quick breathing that accompanies it helps massage（按摩）the digestive organs and strengthens the heart.
“A full hour is like having your inside go jogging！One finishes out of breath, but feels revitalized（产生新活力. And on top of that , you’ve had a laugh,”said doctor Alexisd’ Estaing.And many participants in Paris also emphasize the psychological benefits. They believe that laughter is a way of making oneself feel more confident.
小题1:Which of the following is not included among the benefits of laughing?
| A．It can make people rediscover their children’s laugh. |
| B．It can release good chemical into blood streams. |
| C．It can make you feel self—confident. |
| D．It can cure the illness of people. |
| A．take the world’s best medicine. |
| B．talk to each other about what troubles you. |
| C．learn series of laughter techniques. |
| D．have a good laugh after a busy day. |
| A．Jocelyne Le Moan is a teacher of the club. |
| B．the members are mostly middle---aged white collars. |
| C．people always need some way to relax in life. |
| D．laugh freely and everything goes well. |
| A．Those members feel too much pressure on them. |
| B．They want to find a place to relax themselves. |
| C．Laughters help massage the digestive organs. |
| D．The members don’t know how to laugh. |
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