首页
登录
职称英语
Even plants can run a fever, especially when they’re under attack by insects
Even plants can run a fever, especially when they’re under attack by insects
游客
2023-07-25
57
管理
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 (红外线的) 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 cold detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infra-red 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 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 backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infra-red 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 infra-red 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. [br] The application of infra-red scanning technology to agriculture met with some difficulties due to ______.
选项
A、the lack of official support
B、its high cost
C、the lack of financial support
D、its failure to help increase production
答案
C
解析
第三段最后一句话给出了原因:But only if Paley finds the financial backing which he failed to obtain 10 years ago.这里的backing与support意思相同。可以看出,经济支持是他现在的问题,也是他十年前面临的问题。故选之。
转载请注明原文地址:https://tihaiku.com/zcyy/2867703.html
相关试题推荐
Foodwhichiskepttoolongdecaysbecauseitisattackedbyyeasts(酵母菌),m
Foodwhichiskepttoolongdecaysbecauseitisattackedbyyeasts(酵母菌),m
Foodwhichiskepttoolongdecaysbecauseitisattackedbyyeasts(酵母菌),m
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Theresearchersputalltheplantsinagreenhousetogrowundernormalcond
Californiahasmorethantwothousand【S1】______ofplantsthatarenotfound
Californiahasmorethantwothousand【S1】______ofplantsthatarenotfound
随机试题
Undergroundticketsareavailableatallundergroundstations.Ticketprices
[originaltext]M:You’regoingtoSoutheastAsiancountriesforaholidaysoon,
Besides"American"characteristics-individualism,self-reliance,informality,
《学记》中提出的“学然后知不足,教然后知困。知不足,然后能反也;知困,然后能自强
材料: 教师在“杂交育种和诱变育种”教学结束环节设计如下: 师:这节课我
由脾破裂出血引起的休克属于()。A.低血容量性休克 B.创伤性休克 C.感染
对旅游景区区位选择进行可行性研究的方面有( )。A.当地人文特色 B.所选择
按行权日期的不同,金融期权可分为()。A.现货期权和期货期权 B.看涨期权和
固定在建筑物上的节日彩灯、航空障碍信号灯及其他用电设备的线路防止雷电波侵人的措
胚囊自受精日起超过多少天就不能用于研究A.14天内 B.28天内 C.17天
最新回复
(
0
)