首页
登录
职称英语
A new study in West Africa shows how farm irrigation systems powered by the
A new study in West Africa shows how farm irrigation systems powered by the
游客
2023-08-24
23
管理
问题
A new study in West Africa shows how farm irrigation systems powered by the sun can produce more food and money for villagers. The study in Benin found that solar-powered pumps are【B1】______in supplying water, especially during the long dry season.
Sub-Saharan Africa is the part of the world with the least food【B2】______. The United Nations Food and Agriculture Organization【B3】______that more than one billion of the world’s people faced hunger last year. Around 265 million of them live south of the Sahara Desert.【B4】______rainfall is one of their main causes of food shortages.
Jennifer Burney from Stanford University in California led the study. The research team helped build three solar-powered【B5】______irrigation systems in northern Benin. Between thirty and thirty-five women used each system to pump water from the ground or a stream. Each woman【B6】______farming her own 120 square meters of land. They also farmed other land collectively.
The solar-powered【B7】______systems produced an average of nearly two metric tons of vegetables per month. During the first year, the women kept a monthly average of almost nine kilograms of vegetables for home use. They sold the【B8】______produce at local markets. The earnings greatly increased their ability to buy food during the dry season which can last six to nine months.
The researchers note that only four percent of the cropland in sub-Saharan Africa is irrigated. Using solar power to pump water has higher costs【B9】______. But the study says it can be more economical in the long term than using fossil fuels like gasoline. And solar power is【B10】______friendly. [br] 【B9】
A new study in West Africa shows how farm irrigation systems powered by the sun can produce more food and money for villagers. The study in Benin found that solar-powered pumps are(26)effective in supplying water, especially during the long dry season.
Sub-Saharan Africa is the part of the world with the least food(27)security. The United Nations Food and Agriculture Organization(28)estimates that more than one billion of the world’s people faced hunger last year. Around 265 million of them live south of the Sahara Desert.(29)Lack of rainfall is one of their main causes of food shortages.
Jennifer Burney from Stanford University in California led the study. The research team helped build three solar-powered(30)drip irrigation systems in northern Benin. Between thirty and thirty-five women used each system to pump water from the ground or a stream. Each woman(31)was responsible for farming her own 120 square meters of land. They also farmed other land collectively.
The solar-powered(32)irrigation systems produced an average of nearly two metric tons of vegetables per month. During the first year, the women kept a monthly average of almost nine kilograms of vegetables for home use. They sold the(33)surplus produce at local markets. The earnings greatly increased their ability to buy food during the dry season which can last six to nine months.
The researchers note that only four percent of the cropland in sub-Saharan Africa is irrigated. Using solar power to pump water has higher costs(34)at first. But the study says it can be more economical in the long term than using fossil fuels like gasoline. And solar power is(35)environmentally friendly.
选项
答案
at first
解析
空格所在句结构完整,应填入副词修饰整个句子。at first意为“起初”。
转载请注明原文地址:https://tihaiku.com/zcyy/2954731.html
相关试题推荐
Atsomepointin2008,someone,probablyineitherAsiaorAfrica,madethe
Atsomepointin2008,someone,probablyineitherAsiaorAfrica,madethe
Atsomepointin2008,someone,probablyineitherAsiaorAfrica,madethe
Atsomepointin2008,someone,probablyineitherAsiaorAfrica,madethe
______(受邀参加聚会的大多数艺术家)werefromSouthAfrica.A/Themajorityoftheartistsinvi
Atsomepointin2008,someone,probablyineitherAsiaorAfrica,madethe
[originaltext]PhillisWheatleywasayoungAfrican-Americanslavewhobelon
[originaltext]AnewreportfindsthatWestAfricahasbecomeamajorhubof
[originaltext]AnewreportfindsthatWestAfricahasbecomeamajorhubof
AnewstudyinWestAfricashowshowfarmirrigationsystemspoweredbythe
随机试题
Atleastsomeoftheweatherextremesbeingseenaroundtheworldareconseq
框架填充墙在沿墙平面方向地震作用时,其破坏形式为( )。
下列关于墩台帽和盖梁施工的说法中正确的是( )。A.支架宜直接支承在承台以外的
关于低钾血症病因的描述,错误的是A.禁食或长期进食不足 B.严重腹泻 C.急
深交所某只上市股票某日最后一笔成交发生在14:59:30,成交价格为10.0
案例一 (一)资料 2020年2月,某审计组对甲公司2019年度财务收支进行
申请总经理、副总经理的任职资格,应当担任期货公司、证券公司等金融机构部门负责人以
患儿,男性,6岁,因舌部血管瘤拟在全身麻醉下手术切除,采用气管内插管全身麻醉的最
国内铁路包裹运输保险规定,发现托运包裹受损,必须在()天之内向当地保险公司申请
下列情形中,为被审计单位的相关人员提供了舞弊的机会的是( )。A.高层管理人员的
最新回复
(
0
)