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、He sold his invention to make money. B、He preferred invention to teaching. C、He was honored with an award for his teaching met
A、He sold his invention to make money. B、He preferred invention to teaching. C、He was honored with an award for his teaching met
admin
2017-04-28
28
问题
(22)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.(23)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(泥土). 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.(24)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.(25)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.
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、He sold his invention to make money.
B、He preferred invention to teaching.
C、He was honored with an award for his teaching method.
D、He financed 5,000 pot-in-pot systems to help people.
答案
D
解析
转载请注明原文地址:https://jikaoti.com/ti/CVjFFFFM
0
大学英语四级
相关试题推荐
"Lovingachildisacircularbusiness.Themoreyougive,themoreyouget,themoreyouwanttogive,"PenelopeLeachwonsaid.
"Lovingachildisacircularbusiness.Themoreyougive,themoreyouget,themoreyouwanttogive,"PenelopeLeachwonsaid.
Knowingthatyouarepaidlessthanyourpeershastwoeffectsonhappiness.Oneisnegative:athinnerpaypackethurtsself-es
Thetermbiologicalclockisappliedtothemeansbywhichlivingthingsadjusttheiractivitypatterns,withoutany【B1】______c
四大发明(theFourGreatInventions)是指中国古代对世界有巨大影响的四种发明。即造纸术、印刷术、火药(gunpowder)和指南针。造纸术和印刷术使信息的记录和传播有了革命性的进步。火药的发明和传播改变了中世纪(theMiddle
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatternsofgrowthhavebeenobservedThreeperiodsofdev
A、Pleasedbutafraid.B、Happybutnervous.C、Pleasedandproud.D、Excitingandsatisfied.C
A、Healwaysspendsabout550dollars.B、Healwaysspendsover200dollars.C、Hetendstospendnearly1,100dollars.D、Heisno
A、Anapartmentinthefirstfloor.B、Thenicestapartmentdowntown.C、Athree-bedroomapartment.D、Atwo-bedroomapartment.C对话一
A、Therapidreductionoftropicalforests.B、Theincreaseofglobaltemperature.C、Emergenceofanentirelynewspecies.D、Thes
随机试题
硝苯地平的不良反应包括
A.食管癌B.胃癌C.大肠癌D.肝癌E.胰腺癌上述哪一种疾患发病率最高
女,16岁,患1型糖尿病,因肺部感染,诱发酮症酸中毒。
确定水泥稳定土水泥剂量的方法是()。[2012年10月真题]
可能造成重大影响的,应当编制( ),对产生的环境影响进行全面评价。
醇类液体燃烧具有()火焰,几乎不产生烟雾。
合伙企业的下列事务中,无须经全体合伙人同意的是()。
2014年2月1日,某公司经批准进口一台符合国家特定免征关税的科研设备用于研发项目,设备进口时经海关审定的完税价格折合人民币900万元,海关规定的监管期为5年;2016年2月1日,公司研发项目完成以后,将已提折旧200万元的免税设备出售给另一家企业,已知海
对求助者做出一般心理问题诊断前,应该分析求助者()。
角色混同指的是将自己所具有的不同角色相混淆,而发生的导致背离角色期待和角色规范的行为。根据上述定义,下列哪项属于角色混同?
最新回复
(
0
)