首页
登录
职称英语
[originaltext]A few degrees can make a big difference when it comes to food sto
[originaltext]A few degrees can make a big difference when it comes to food sto
游客
2024-01-23
56
管理
问题
A few degrees can make a big difference when it comes to food storage. Food can go bad if they get too warm. But for many of the world’s poor, finding a good way to keep food cool is difficult. Refrigerators are costly and they need electricity. Yet spoiled food not only creates health risks but also economic losses. Farmers lose money when they have to throw away products that they cannot sell quickly. But in 1995, a teacher in northern Nigeria named Mohammed Bah Abba found a solution. He developed the “Pot-in-Pot Preservation” or “Cooling System.” It uses two round containers made of clay. A smaller pot is placed inside a larger one. The space between the two pots is filled with wet sand. The inner pot can be filled with fruit, vegetables or drinks. A wet cloth covers the whole cooling system. Food in the smaller pot is kept from spoiling through a simple evaporation process. Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving. The evaporation process creates a drop in temperature of several degrees. This cools the inner pot and helps keep food safe from harmful bacteria. The invention became popular with farmers in other African countries. Mohammed Bah Abba personally financed the first 5 000 pot-in-pot systems for his own community and five villages nearby. In 2000, the Rolex Watch Company of Switzerland honored him with the Rolex Award for Enterprise. This award recognizes people trying to develop projects aimed at improving human knowledge and well-being.
Questions 22 to 25 are based on the passage you have just heard.
22. What is an important factor in food storage?
23. Why does the speaker say spoiled food can create economic losses?
24. How does the pot-in-pot system work?
25. What can we learn about Mohammed Bah Abba?
选项
A、The pot using.
B、The wet cloth.
C、The sand.
D、The temperature.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3387735.html
相关试题推荐
[originaltext](1)AmessageinabottlesentouttoseabyaNewHampshireman
[originaltext](5)Almostallcompaniesrecognizetheimportanceofinnovati
[originaltext](3)Bigfast-foodchainsinNewYorkCityhavestartedtoobe
[originaltext](3)Bigfast-foodchainsinNewYorkCityhavestartedtoobe
[originaltext](1)TheInternationalLaborOrganizationsaysthenumberofp
[originaltext](5)UnderthelawinMassachusetts,tobaccocompanieshaveto
[originaltext](5)UnderthelawinMassachusetts,tobaccocompanieshaveto
[originaltext]Longqueues,delayedflightsandovercrowdingatairportshav
[originaltext][5]AtourboatturnedoveroffthecoastofNicaragua,killin
[originaltext][5]AtourboatturnedoveroffthecoastofNicaragua,killin
随机试题
Asthecostofgasandoilforhomeheatinghasgoneup,manyAmericanshav
按建设项目的融资主体分类,项目可分为( )。A.公共项目和非公共项目 B.新
随着改革开放的深入和市场经济的发展,执政党面临的最根本的课题,是能不能始终代表最
(2016年真题)下列属于股票应当载明的事项的有( )。 Ⅰ.公司名称Ⅱ.公
重证见声音响亮,不喘不咳,呼吸均匀,皮肤润泽,其辨证为A.心善 B.肝善
正常情况下,人体内铁主要存在的形式是A:铁蛋白B:含铁血黄素C:肌红蛋白D
根据《基础地理信息数据档案管理与保护规范》,归档的基础地理信息数据成果应包含(
下面变量中属于顺序变量的是()。A.性别 B.天气温度 C.上证股指 D
神经衰弱的精神易兴奋可表现为()。 (A)情感高涨(B)联想增多 (C)
在弗洛伊德看来,人格的()是健康人格的前提。A.本我 B.自我 C.无我
最新回复
(
0
)