首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Even plants can run a fever, especially when they’re under attack by insects or disease. But unlike humans, plants can have thei
Even plants can run a fever, especially when they’re under attack by insects or disease. But unlike humans, plants can have thei
admin
2012-06-18
50
问题
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 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-coded map showing where plants were running "fevers". Farmers could then spot-spray, using 40 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 long-term 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 Other 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.
Infrared scanning technology may be brought back into operation because of_____.
选项
A、the desire of farmers to improve the quality of their produce
B、growing concern about the excessive use of pesticides on crops
C、the forceful promotion by the Department of Agriculture
D、full support from agricultural experts
答案
B
解析
依据文章第三段第二行。
转载请注明原文地址:https://kaotiyun.com/show/OunO777K
0
考博英语
相关试题推荐
Heforgavehiswifealthoughshehadoncehada______affairwithapoet.
AtthetimeJaneAustin’snovelswerepublished—between1811and1818—Englishliteraturewasnotpartofanyacademiccurriculum
Intheearly20thcentury,attheadventofthetelephone,itwasconsideredasuperfluousinstrumentwhichwouldneverbeofpr
Scientistsgenerallyholdthatlanguagehasbeensolonginusethatthelengthoftimewritingisknowntocoveris______inco
BeninMayerAlcottbasedtheprincipalcharactersofherbookLittleWomenonhersistersandherself.
Inasense,scientistsandengineersinthepasthavebeenfortunate,forwebecameaccustomedtobeingmeasuredbynatureitsel
Hisimprisonment______hiscolleagues,fortheycannotbelievethatsucharespectableandlaw-abidingpersonwilltakebribes.
Noonecouldcomeupwithaneasysolutiontothegovernment’spredicament-labor______whichiscausedbythewars.
有些人常常讥讽某个人好名,某个人爱出风头,其实只不过醋酸在暗暗作怪,恨自己没有露一手,一旦有机会可以露一手,也会照样露一手。一个人如果连荣誉心都没有,连好名声都不愿博取,则该人啥丧天害理的事,都可能干得出。人之异于禽兽者,在于人好名,禽兽不好名也。
We’veallheardaboutwhalewatchingfromboatsorshore,andafewcompaniesarenowofferingthepossibilityofactuallyswimmi
随机试题
以下属于幼儿园教师“环境的创设与利用”专业能力内容的是()
马克思、恩格斯通过批判地继承英国古典经济学的研究成果得到最大收获包括()
落日楼头,_______,江南游子。(辛弃疾《水龙吟.登建康赏心亭》)
患者关节疼痛重着,四肢酸困沉重,头重如裹,其病因是
环境影响评价的工艺流程图和工程设计工艺流程图有所不同,主要关心的是()。
制造费用和管理费用都是本期发生的生产费用,因此,均应计入当期损益。()
企业劳动定员标准按照管理体制分类方法,可分为()。[2012年5月、2011年11月三级真题]
最早确立“刑律统类”编纂方式的封建成文法典是()。
下列表述错误的是()。
在考生文件夹下,打开文档Word.docx,按照要求完成下列操作并以该文件名(Word.docx)保存文档。【文档开始】可怕的无声环境科学家曾做过一个实验,让受试者进入到一个完全没有声音的环境里。结果发现在这种极度安静的环境中
最新回复
(
0
)