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
专升本
Even plants can run a fever, especially when they’ re under attack by insects or disease. But unlike humans, plants can have the
Even plants can run a fever, especially when they’ re under attack by insects or disease. But unlike humans, plants can have the
admin
2019-05-23
49
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(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 attack. The goal was to let farmers precisely target pesticide(杀虫剂)spraying rather than rain poison on a whole field, which always 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. An infrared scanner, on a plane flying at 3,000 feet at night, measured the heat sent out by crops. The data was turned into a color-coded map showing where plants were running "fevers". Farmers could then spot-spray, 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 long-term supporters 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 about how 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 long-distance infrared crop scanning could be adopted by the end of the decade, but only if Paley finds the financial support which he failed to obtain 10 years ago.
In order to apply pesticide spraying precisely, we can use infrared scanning to______.
选项
A、draw a color-coded map
B、locate the problem area
C、attract insects and treat disease
D、estimate the damage to the crops
答案
B
解析
根据第二段第二、三、四句“An infrared scanner…measured the heat sent out by crops.The data was turned into a color-coded map showing where plants were running‘fevers’.Earmers could then spot-spray…”可知,红外线扫描仪可以确定出问题的位置,使得农民可以定点喷洒。故选B。
转载请注明原文地址:https://kaotiyun.com/show/ZoDC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Hedidn’tgotothematchlastnightbecausehefailedtofinishhishomeworkintime.
TheNeedforHolidaysYou’venodoubtheardpeoplesayhowmuchthey"need"aholiday,whenwhattheyreallymeanisthatth
Likemostpeople,Iwasbroughtuptolookuponlifeasaprocessofgetting.ItwasnotuntilinmylatethirtiesthatImadet
Thebedhasbeen_______inthefamily.Itwasmygreat-grandmother’soriginally.
A、peoplediffergreatlyintheirabilitytocommunicateB、therearenumerouslanguagesinexistenceC、Mostpubliclanguagesare
Lawschooldoesn’t______asmanyyearsasmedicalschooldoes.
We’llputoffthepicnicuntilnextweek,whentheweathermaybebetter.
Feedplantsandtheygrow:______themandtheysuffer.
Mostpersonnelmanagersagreethatjobinterviewsareoneoftheleastobjectiverecruitmentmethods.Buttheadvantagesoftest
随机试题
A.遗传病诊断B.产前诊断C.终止妊娠手术D.胎儿性别鉴定E.医学技术鉴定《中华人民共和国母婴保健法》规定,经产前检查,医生发现或者怀疑胎儿异常的,应当对孕妇进行
烧伤病人的氮热比为
危险度是指
既行血补血,又舒筋活络的药是
下列何项作为测量外业工作的基准面:
在进口设备抵岸价的计算中,银行财务费的计费基础是( )。
信用风险具有明显的系统性风险特征,是不可规避的。()
Thecoatisworth______.
Britain,underaLabourgovernment,consideredditching(givingup)itsnucleardeterrentasawayofmakingcrucialsavingsto
Whatispopculture?Well,popis【C1】______forpopular.Thebeginningofpopculturecanoftenberelatedtopopularmovies,tel
最新回复
(
0
)