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
25
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
Ifyouexplainedthesituationtoyoursolicitor,he______abletoadviseyoum
AllthePresident’sMen______oneoftheimportantbooksforhistorianswhostu
根据同义词和近义词略写法,快速书写时可选用()词写。A.音节少的 B.笔画少
下列各项中,不属于旅游环境的特点的是( )。A.内容广泛 B.脆弱性 C.
小儿一岁以内腹股沟斜疝,应采用哪一种治疗方法A、非手术治疗 B、疝囊切除,高位
某产品的单位变动成本因耗用的原材料涨价而提高了1元,企业为抵消该变动的不利影响决
【变压器、互感器和补偿装置停送电】31、新投运电容器组应进行()合闸冲击
“以貌取人”,指的是人们认识过程中经常存在的()。A:首因效应B:近因效应C
某企业批量生产一种零件,投产批量为5件,经过4道工序加工,按照加工顺序,单件每道
下列选项中,属于有朝以来终世不改的根本大法是( )。 A.《大明律》 B.
最新回复
(
0
)