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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(紅外線)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(殺蟲劑)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.
小題1:Plants will send out an increased amount of heat when they are________.
A．facing an infrared scanner
B．sprayed with pesticides
C．in poor physical condition
D．exposed to excessive sun rays
小題2:In order to apply pesticide spraying precisely, we can use infrared scanning to________.
A．estimate the damage to the crops
B．draw a colour­coded map
C．measure the size of the affected area
D．locate the problem area
小題3:Farmers can save a considerable amount of pesticide by________.
A．resorting to spot­spraying
B．transforming poisoned rain
C．consulting infrared scanning experts
D．detecting crop problems at an early stage
小題4: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

小題1:C
小題2:D
小題3:A
小題4:C
文章介紹了一種能通過紅外線測量那些植物生病了的技術，來節(jié)約農藥，提高生產效率。
小題1:C 推理題。根據文章第一段可知當植物的情況不理想如受到昆蟲的襲擊的時候，也會生病，故C正確。
小題2:Ｄ　細節(jié)題。根據第２段３,４,５三行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.可知這種掃描儀可以確定出問題的具體位置，可以定點噴灑農藥，故Ｄ正確。
小題3:Ａ　細節(jié)題。根據第２段３,４,５三行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可知Ａ正確。
小題4:Ｃ　推理題。根據最后一句可知Ｃ正確。
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