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
2024-04-25
29
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] 【B5】
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
drip
解析
此处应填入名词,与irrigation一起修饰名词systems。drip意为“水滴”。
转载请注明原文地址:https://tihaiku.com/zcyy/3570991.html
相关试题推荐
AnewstudyinWestAfricashowshowfarmirrigationsystemspoweredbythe
AnewstudyinWestAfricashowshowfarmirrigationsystemspoweredbythe
AnewstudyinWestAfricashowshowfarmirrigationsystemspoweredbythe
AnewstudyinWestAfricashowshowfarmirrigationsystemspoweredbythe
AnewstudyinWestAfricashowshowfarmirrigationsystemspoweredbythe
AnewstudyinWestAfricashowshowfarmirrigationsystemspoweredbythe
AnewstudyinWestAfricashowshowfarmirrigationsystemspoweredbythe
SouthAfricahas11officiallanguages.Ifyouwanttosayhello,it’s"sawu
SouthAfricahas11officiallanguages.Ifyouwanttosayhello,it’s"sawu
Electronicmailsystemsareeithercomputerizedornoncomputerized.Importan
随机试题
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Accordingtotheconversation,whatcanbeinferredaboutthequalificationsto
鱼类的营养学特点是( )。A.含有丰富的维生素C B.经常大量生食鱼制品可造
下列选项中关于音乐剧的说法不正确的是。()A.音乐剧类似轻歌剧的一种舞台剧
检验检测机构校准活动的主要依据是检验检测机构根据实际需要自行制定的()。A
医疗队要去某亚热带地区执行任务,该地区正流行疟疾。如不幸感染,应使用A.氯喹B.
无人值守变电站的技术和设备选择应遵循“安全、高效、环保”原则,优先采用技术成熟、
一般情况下,固定资产重置的原因通常是企业的设备自然老化和()。A.行业变化 B
根据《最高人民法院关于审理建设工程施工合同纠纷案件适用法律问题的解释》,下列关于
最新回复
(
0
)