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
2020-02-09
24
问题
(22)A few degrees can make a big difference when it comes to food storage. Food can so 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 (黏土). 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 methods.
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://kaotiyun.com/show/kNp7777K
0
大学英语四级
相关试题推荐
A、TheywereseparatedbytheUSdoctors.B、Theywerebornwithjoinedheads.C、Theirfatheristooyoungtobringthemup.D、The
BarackandMichelleObamaunderstandtheheavyburdenofstudentloandebt.TheObamasdidnotpayofftheirstudentloansuntil
WhyMoneyDoesn’tBuyHappinessWhatdotheexpertssay?[A]Allinall,itwasprobablyamistaketolookfortheanswertothe
Carsandotherroadvehiclesarethesinglemainsourceofharmfulnitrogenoxides.Roadtransportremainsthebiggestsourc
ThenumberofspeakersofEnglishinShakespeare’stimeisestimatedtohavebeenaboutfivemillion.Todayitisestimatedthat
A、Itwillgoforoneyear.B、Itwillgoformorethantwoyears.C、ItalldependsonhowtheyshapeafterChristmas.D、Itwillg
A、550,000.B、100million.C、549,922.D、110000C
A、Theyusuallydon’tfollowfamilyrules.B、Theydon’tliketotakechancesintheirlives.C、Theyarelesslikelytobesucce
A、Whatmakeslifeenjoyable.B、Howtoworkwithtools.C、Whatacommunitymeans.D、Howtoimprovehealth.B短文中提到了参加改造道路项目对女孩们产生的
A、Corn.B、Soybean.C、Oat.D、Rye.B短文提到,到2000年,近3000万公顷土地种了大豆。“它是全国最重要的高蛋白动物饲料和植物油农作物。”故B正确。听短文答题时,要特别留意“语义强调之处”。本题“thenation’s
随机试题
行为科学最基本的理论核心是()
观察法
决定膀胱癌预后的是
通过横突孔的结构是
药物在体内的转化和排泄统称为
某患者,男性,57岁,因急性下壁心肌梗死入院。检查BP90/60mmHg,P42次/分,律齐,最可能的心律失常是()
2015年3月国务院《深化标准化工作改革方案》中规定,政府主导制定的标准由6类整合精简为4类,其中包括()。
中国已成为世界第二大经济体,人们的物质生活得到了极大的改善,是否因此就可以认为“提倡艰苦朴素”这一口号已经过时了?我们今天还要不要发挥艰苦奋斗的光荣传统呢?________。填入画横线部分最恰当的一句是:
洗钱罪的行为方式主要有 ( )。
Thirtyyearsago,anyoneblaminglonelinessforphysicalillnesswouldhavebeenlaughedat.Butasscientistsstudieddifferent
最新回复
(
0
)