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【单选题】Even plants can run a fever, especially when they are under attack by insects or disease.But (71) humans, plants can have their temperature (72) from 3,000 feet away—straight up.A、decade ago, (73) the infrared (红外线的) scanning technology developed for military purpose and other satellites, physicist Stephen Paley (74) a quick way to take the temperature of crops to determine (75) ones are under stress. The goal was to let farmers (76) target pesticide spraying (77) rain poison on a whole field, which (78) includes plants that don’t have the pest problem.
Even better, Paley’s Remote Scanning ServicesCompany could detect crop problem before they became (79) to the eye. Mounted on a plane flown at 3,000 feet (80) , an infrared scanner measured the heat emitted by crops. The data were (81) . into a color-coded map showing (82) plants were running "fevers". Farmers could then spot spray, using 50 to 70 percent less pesticide than they (83) woulD、
The bad news is that Paley’s company closed down in 1984, after only three years. Farmers (84) the new technology and long-term backers were hard (85) .But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to (86) into operation.Agriculture experts have no doubt the technology works. "This technique can be used (87) 75 percent of agricultural land in the United States," says George Oerther of TexasA&M. Ray Jackson, who recently retired from theDepartment ofAgriculture, thinks (88) infrared crop scanning could be adopted by the end of the decade, but (89) Paley finds the financial backing (90) he failed to obtain 10 years ago.
A．dominantly
B．deliberately
C．accidentally
D．invariably

网考网参考答案：D
网考网解析：
此题属于语意搭配题。invariably意为“不变地，一定地”，根据句意，如果整块田都洒上农药，那些没遭虫害的庄稼不可避免地会受到影响，故选项D invariably正确。选项A dominantly意为“占优势地”；选项B deliberately意为“故意地”；选项C accidentally意为“偶然地”；均与句意不符。句意：他这样做的目的是想让农民准确地定点喷洒农药而不是让整块农田都被洒满农药。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>