Even plants can run a fever, especially when they're under attack by insects or disease. But unlike human, plants can have their temperature taken from 3,000 feet away--straight up. A decade ago, adopting the infrared scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide spraying rather than rain poison on a whole field, which invariably includes plants that don't have pest problems. Even better, Paley's Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a colourcoded map showing where plants were running "fevers". Farmers could then spotspray, using 50 to 70 percent less pesticide than they otherwise would. The bad news is that Paley's company closed down in 1984, after only three years. Farmers resisted the new technology and longterm backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. "This technique can be used on 75 percent of agricultural land in the United States, " says George Oerther of Texas A & M. Ray Jackson, who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago. The application of infrared scanning technology to agriculture met with some difficulties--  _  . A) its high cost B) the lack of official support C) the lack of financial support D) its failure to help increase production
C


(Question)
Step into Pat Lundin's home and you'll be greeted by 500 smiling faces of dolls. Lundin, 82, describes herself as "doll crazy". And she's not alone. As a member of Timeless Treasures Doll Club of Largo, she frequently meets with 25 other women who share her hobby. Once a month, they gather at the Palms of Largo to show off their latest finds and catch up on news in the world of doll collecting. On Saturday, the club will hold the Palms of Largo Fifth Annual Doll Show. The program will include 37 vendors with both classic and contemporary dolls for sale. "Timeless Treasures is a club that's open to doll lovers regardless of the age of the doll," said Judy Smith, president of the organization. "Some doll clubs require members have a certain number of antique dolls, but we don't. we make sure we are not terribly formal." Smith, 71, is a retired schoolteacher who owns Judy's Doll Hospital, a part-time business she operates out of her home. She will have a table offering repair and appraisal services. Smith firs began studying and collecting dolls in her early 20s,in Glassboro, New Jersey, she does not know how many dolls she owns, or how many repairs she has made over the years. But she does know the age of her oldest doll. "She's 129," Smith said. "It is a German-made doll that belonged to my grandmother , and it sits in my living room." The show is for both the beginner as well as the experienced collector, said Anita Munson, one of the show's organizers. Over the years, Munson, 82, has learned how to identify a valuable doll. "Generally speaking porcelain  dolls are the most valuable," she said. "But the porcelain will not be shiny." Smith believes many people will attend to find out how much their dolls are worth. She wants them to know more. "Because the dolls reflect what the children were wearing and doing at a particular period of time, they can be a great history lesson for children now," she said. According to the passage, Timeless Treasures is  _  . A) a club for doll lovers B) a company selling dolls C) a group of retired teachers D) an organization repairing toys
(Answer)
A


Ques: No woman can be too rich or too thin. This saying often attributed to(...) the late Duchess   of Windsor represents much of the strange spirit of our times. Being thin is assumed as such a virtue. The problem with such a view is that some people actually attempt to live by it. I myself have fantasies of slipping into narrow designer clothes. Consequently, I have been on a diet for the better --or worse-- part of my life. Being rich wouldn't be bad either, but that won't happen unless an unknown   dies suddenly in some distant land, leaving me millions of dollars. Where did we go off the track? When did eating butter become a sin , and a little bit of extra flesh unappealing, if not unpleasant? All religions have certain days when people stop from eating and overeating is one of Christianity's seven deadly sins. However, until quite recently, most people had a problem getting enough to eat. In some religious groups, wealth was a symbol of probable high morals, and fatness a sign of wealth and well-being. Today the opposite is true. We have shifted to thinness as our new mark of virtue. The result is that being fat -- or even only somewhat overweight -- is bad because it implies a lack of moral strength. Our obsession with thinness is also fueled by health concerns. It is true that in this country we have more overweight people than ever before, and that in many cases, being overweight correlates with an increased risk of heart and blood vessel disease. These diseases, however, may have as much to do with our way of life and our high-fat diets as with excess weight. And the associated risk of cancer in the digestive system may be more of a dietary problem -- too much fat and a lack of fiber -- than a weight problem. The real concern, then, is not that we weigh too much, but that we neither exercise enough nor eat well. Exercise is necessary for strong bones and both heart and lung health. A balanced diet without a lot of fat can also help the body avoid many diseases. We should surely stop paying so much... Swept by the current trend, the author  _  . A) could still prevent herself from going off the track B) had to go on a diet for the greater part of her life C) had to seek help from rich distant  s D) had to wear highly fashionable clothes
Ans:
B