1 . Is It Worth Buying Organic Food?
Organic food, grown without artificial chemicals, is increasingly popular nowadays. Consumers have been willing to pay up to twice as much for goods with organic labels (标签). However, if you think paying a little more for organic food gets you a more nutritious (有营养的) and safer product, you might want to save your money. A study led by researchers at Stanford University says that organic products aren’t necessarily more nutritious, and they’re no less likely to suffer from disease-causing bacteria, either.
The latest results, published in the Annuals of Internal Medicine, suggest that buyers may be wasting their money. “We did not find strong evidence that organic food is more nutritious or healthier,” says Dr. Crystal Smith-Spangler from Stanford. “So consumers shouldn’t assume that one type of food has a lower risk or is safer.”
For their new study, Smith-Spangler and her colleagues conducted a review of two categories of research, including 17 studies that compared health outcomes between consumers of organic against traditional food products, and 223 studies that analyzed the nutritional content of the foods, including key vitamins, minerals and fats.
While the researchers found little difference in nutritional content, they did find that organic fruit and vegetables were 20% less likely to have chemicals remaining on the surfaces. Neither organic nor traditional foods showed levels of chemicals high enough to go beyond food safety standards. And both organic and traditional meats, such as chicken and pork, were equally likely to be harmed by bacteria at very low rates. The researchers did find that organic milk and chicken contained higher levels of omega-3 fatty acids, a healthy fat also found in fish that can reduce the risk of heart disease. However, these nutritional differences were too small, and the researchers were unwilling to make much of them until further studies confirm the trends.
Organic food is produced with fewer chemicals and more natural-growing practices, but that doesn’t always translate into a more nutritious or healthier product. The U.S. Department of Agriculture (USDA) states that “Whether you buy organic or not, finding the freshest foods available may have the biggest effect on taste.” Fresh food is at least as good as anything marketed as organic.
1. The new research questions whether organic food ________.| A．should replace traditional food |
| B．has been overpriced by farmers |
| C．is grown with less harmful chemicals |
| D．is really more nutritious and healthier |
| A．organic food could reduce the risk of heart disease |
| B．traditional food was grown with more natural methods |
| C．both organic and traditional food they examined were safe |
| D．there was not a presence of any forms of bacteria in organic food |
| A．Organic chicken and pork. |
| B．Organic milk and chicken. |
| C．Traditional chicken and pork. |
| D．Traditional fruit and vegetables. |
| A．Doubtful. | B．Positive. | C．Unconcerned. | D．Approving. |
—I don’t mind what you do ______you let me know ahead of time.
| A．ever since | B．as long as | C．in case | D．even though |
| A．why | B．how | C．what | D．that |
9 . If there’s one cliché (陈词滥调) that really annoys Danah Boyd, a specialist researcher who has made a career from studying the way teenagers use the web, it’s that of the digital native. “Today the world has computer-mediated communications. Thus, in order to learn about their social world around them, teenagers are learning about those things too. And they’re using that to work out the stuff that kids have always worked out: peer (同龄人) sociality, status, etc.” she says.
It’s no surprise Boyd takes exception, really. As one of the first digital anthropologists to dig into the way teenagers use social networking sites, she gained insights into the social web by taking a closer look at what was going on.
Lately, her work has been about explaining new ways of interpreting the behavior we see online. She outlined some examples at a recent conference in San Francisco, including the case of a young man from one of the poorest districts of Los Angeles who was applying for a top American college. The applicant said he wanted to escape the influence of violence, but the admissions officer was shocked when he discovered that the boy’s MySpace page was covered with precisely the violent language he claimed to hate. “Why was he lying about his motivations?” asked the university. “He wasn’t,” said Boyd. “In his world, showing the right images online was a key part of surviving daily life.”
Understanding what’s happening online is especially important, for today’s teenagers have a vastly different approach to privacy from their parents. She says, “Adults think of the home as a very private space. That’s often not the case for teenagers because they have little or no control over who has access to it, or under what conditions. As a result, the online world can feel more private because it feels like there’s more control.”
The concept of control is central to Boyd’s work, and it applies to pointing out the true facts about teenage behavior. Boyd suggests control remains in the same places as it always did.
“Technologists all go for the idea of techno-utopia (乌托邦), the web as great democratizer (民主化)”, she says. “But we’re not actually democratizing the whole system; we’re just shifting the way in which we discriminate.”
It’s a call to arms that most academic researchers would tend to sidestep, but then Boyd admits to treading a fine line between academics and activists. “The questions I continue to want to ask are the things that are challenging to me；having to sit down and be forced to think about uncomfortable social stuff, and it’s really hard to get my head around it, which means it’s exactly what I should dive in and deal with, ” she says.
1. What does Danah Boyd think of “computer-mediated communications”?| A．They teach teenagers about social interaction. |
| B．They replace other sorts of social interaction for teenagers. |
| C．They are necessary for teenagers to have social interaction. |
| D．They are barriers to wider social interaction among teenagers. |
| A．To show how easy it is to investigate somebody’s online activity. |
| B．To explain how easy it is to misinterpret an individual online activity. |
| C．To prove how important it is to check the content of someone’s online activity. |
| D．To express how necessary it is to judge someone’s sincerity from his online activity. |
| A．parents tend not to respect teenagers’ need for online privacy |
| B．teenagers are less concerned about privacy than their parents |
| C．teenagers feel more private in the online world than in the home |
| D．parents value the idea of privacy less in a domestic environment |
| A．is willing to take on research challenges others would avoid |
| B．regards herself as being more of an activist than a researcher |
| C．is aware that she is lacking in ability to deal with the challenges |
| D．feels like abandoning the research into uncomfortable social stuff |
10 . Planning to get away? Think passport first
If you’re planning to get away from it all this year, you should think passport first. Checking you have a valid passport before you book your trip takes minutes but could save you the trouble and cost of not being able to go.
Renewing (更新) your passport before it runs out
You can renew your passport up to 9 months before it can no longer be legally used. So take the time now and save the tears later.
Applying for a passport for the first time
Our eligibility (资格) checks mean that it takes at least one week to issue (颁发) a passport. So make sure you don’t leave it to the last minute, and apply in plenty of time.
Help with your application is just around the corner
Selected Post Office branches and Worldchoice travel agents offer a Check and Send service that helps you with your application. It’s convenient and you should receive your passport within 2 weeks.
If you need to apply for or renew a passport, you can either:
Pick up a Passport Application Form at Selected Post Office branches and Worldchoice travel agents.
Or call the Application Form Request line on 0901 4700 100 or visit www.passport.gov.uk
If your need is urgent, call 0870 521 0410 for an appointment at one of our offices. We can’t guarantee to see customers without an appointment.
1. When applying for a passport for the first time, you need to know that ______.| A．passports can be legally used forever |
| B．passports are issued at the last minute |
| C．application checks take at least one week |
| D．applications are selected by post office branches |
| A．going to the offices directly |
| B．making a call for an appointment |
| C．visiting www.passport.gov.uk for a guarantee |
| D．getting in touch with Worldchoice travel agents |
| A．Certain types of passports. | B．Instructions on applying for passports.. |
| C．Advantages of holding passports. | D．Different functions of passports |
