Passage Five
Even plants can run a fever, especially when they’re under attack by insects or disease. But unlike humans, plants can have their temperature taken from 3,000 feet away-straight up. A decade ago, adapting the infrared (红外线) 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 (杀虫剂) spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest (害虫) 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 color-code map showing where plants were running" fevers".
A. the lack of official support
B. its high cost
C. its failure to help increase production
D. the lack of financial support
| Even plants can run a fever, especially
when they’ re under attack by insects or disease. But unlike humans, plants can
have their temperature taken from 3 000 feet away—straight up. A decade ago,
adapting the infrared(红外线)scanning technology developed for military purposes
and other satelities, physicist Stephen Paley came up with a quick way to take
the temperature of crops to determine which ones were under stress. The goal was
to let farmers precisely target pesticide(杀虫剂)spraying rather than rain poison
on a whole field, which invariably includes plants that don’t have
pest(害虫)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 int A. sprayed with pesticides B. facing an infrared scanner C. in poor physical condition D. exposed to excessive sun rays [单项选择]
Even plants can run a fever, especially when they are under attack by insects or diseases. But (21) humans, plants can have their temperature (22) from 3,000 feet away--straight up. A decade ago, (23) the infrared(红外线的)scanning technology developed for military purpose and other satellites, physicist Stephen Paley (24) a quick way to take the temperature of crops to determine (25) ones are under stress. The goal was to let farmer (26) target pesticide spraying (27) rain poison on a whole field, which (28) include plants that don’t have the pest problem. 我来回答: 提交
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