首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A few degrees can make a big difference when it comes to food storage. Foods can go bad if they get too warm. But for many of th
A few degrees can make a big difference when it comes to food storage. Foods can go bad if they get too warm. But for many of th
admin
2016-10-07
45
问题
A few degrees can make a big difference when it comes to food storage. Foods 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/Cooling System." It uses 2 round containers made of clay. A smaller pot is placed inside a larger one.
The space between the 2 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 stored in the smaller pot is kept from spoiling through a simple evaporation process. Water in the sand between the 2 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. Some foods can be kept fresh this way for several weeks.
People throughout Nigeria began using the invention. And it 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.
A committee considers projects in science and medicine, technology, exploration and discovery, the environment and cultural history. Winners receive financial assistance to help develop and extend their projects.
The award is given every 2 years. The most recent one was given last year.
The Cooling System invented by Mohammed Bah Abba is different from a refrigerator in that it is more _____.
选项
A、economical
B、health-conscious
C、convenient
D、environment-friendly
答案
A
解析
第3段第1句开头的But一词表明Mohammed Bah Abba发明the Cooling System的目的应在上面两段中寻找,第1段和第2段提到了一个矛盾现象,即冰箱很贵且耗电与农民必须拥有冰箱以避免损失的矛盾,接着第3段便提到Mohammed Bah Abba找到了解决的办法,即Cooling System,可见Cooling System既不用花很多钱又能解决农民的问题,因此,本题应选A。
转载请注明原文地址:https://kaotiyun.com/show/ogY7777K
0
大学英语四级
相关试题推荐
OneofthestrangestandmostfascinatingthingsaboutScotlandistheLochNessMonster.Somepeoplebelieveinthemonster’s【B
It’sdifficulttoimaginetheseaeverrunningoutoffish.It’ssovast,sodeep,so【B1】______.Unfortunately,it’snot【B2】____
Today,studentswhowanttolearnEnglishintheUShaveawidechoiceofcoursesandinstitutionsto【B1】_______.And,becauset
Today,studentswhowanttolearnEnglishintheUShaveawidechoiceofcoursesandinstitutionsto【B1】_______.And,becauset
ElNinoisthenamegiventothemysteriousandoftenunpredictablechangeintheclimateoftheworld.Thisstrange【C1】______h
ElNinoisthenamegiventothemysteriousandoftenunpredictablechangeintheclimateoftheworld.Thisstrange【C1】______h
RecentlytheBarbicanmuseuminLondonheldanexhibitioncalledtheRainRoom.Duringthetimethisexhibitionwasopen,myTwi
Livinginatimewhenanever-increasingnumberofnewsproviderspushaconstantstreamofheadlinesatuseveryday,peopleca
A、Asummerholidayshe’sbeenlongingfor.B、Aresearchprojectthatmightinteresther.C、Ajobshewilltakeaftergraduation.
Rodwasalreadyanestablishedlabheadwhenhedecidedheneededtolearnmoreaboutcrystallography(结晶学).In1995hewentback
随机试题
在冰雪道路上行车时,车辆的稳定性降低,加速过急时车轮极易空转或溜滑。
实行分权的主要手段是()
患者男性,42岁。乙型肝炎病史十余年,近来右上腹不适,腹胀。超声表现右叶缩小,左叶增大,肝被膜不光滑,实质回声增粗增强,欠均匀,肝静脉细窄,走行迂曲,管壁不平整。如果栓子局部门静脉管壁规整显示清晰,最可能是
体外循环手术病人术前应当停用的药物包括
血府逐瘀汤的组成中含有补阳还五汤的组成中含有
48岁妇女,绝经1年,阴道少许接触出血,查:子宫颈中度糜烂,宫体稍小,子宫颈刮片检查2次均阳性,阴道镜下宫颈活检阳性,应选择哪种方法排除子宫颈癌
假定该建筑的两层地下室采用箱基础,地下室及地上一层的折算受剪面积之比A0/A1=n,其混凝土强度等级同地上一层。地下室顶板没有较大洞口,可作为上部结构的嵌固部位。试问:方案设计时估算的地下室层高最大高度(m),应与下列何项数值最为接近?提示:需特
某高速公路由于业主高架桥修改设计,工程师下令承包商停工1个月。就此,-承包商提出索赔。按照国际惯例,索赔能够成立的包括( )。
光在不同的介质中传播速度不同,在()中传播最快。
2009年1月6日,中国海军护航舰艇编队顺利抵达亚丁湾海域执行护航任务。亚丁湾位于()
最新回复
(
0
)