A Cool Way to Keep Food From Spoiling
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 nineteen ninety-five a teacher in northern Nigeria named Mohammed Bah Abba found a solution. He developed the "Pot-in-Pot Preservation/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 stored 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. 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 five thousand pot-in-pot systems for his own community and five villages nearby.
In two thousand, 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 awards are given every two years. The next awards will be presented in late two thousand twelve. Last year, Rolex launched the Young Laureates Program for the younger generation.
I. Reading comprehension
1. Which of the following is not mentioned as a drawback of spoiled food?
A) Health risks B) Economic losses C) Fluctuations in food prices D) Waste of farm products
2. When using the "Pot-in-Pot Preservation/Cooling System," food is put in _____.
A) the smaller pot B) the bigger pot
C) the space between the two pots D) either of the two pots
3. How does the evaporation process help preserve food?
A) By keeping the food dry B) By creating a cooler environment
C) By absorbing moisture in the air D) All of the above
4. It can be inferred from the news that _____.
A) Mohammed Bah Abba starts a business in making this system
B) Mohammed Bah Abba has earned lots of money by selling this system
C) More job opportunities are available in Mohammed Bah Abba’s community in making this system
D) this invention is welcomed by people nationwide and across borders
5. Which of the following statements is NOT true about the Rolex Award for Enterprise?
A) The awards honor people who try to improve people’s lives.
B) The awards are given annually.
C) The awards are given by a watch company.
D) The winners receive money to continue working on their projects.
Food stored in the smaller pot is kept _(6)_ spoiling through a simple evaporation process. Water in the sand between the two pots evaporates through the surface of the larger pot, _(7)_ drier outside air is moving.
The evaporation process creates a drop _(8)_ temperature of several degrees. This cools the inner pot and helps keep food safe from harmful bacteria. Some foods can be kept _(8)_ this way for several weeks.
People throughout Nigeria began _(9)_ the invention. And it became popular _(10)_ farmers in other African countries. Mohammed Bah Abba personally financed the first five thousand pot-in-pot systems for his own community and five villages nearby.
6. A) fromB) onC) awayD) X
7. A) whenB) whereC) thatD) which
8. A) ofB) forC) inD) on
9. A) useB) to have usedC) to usingD) using
10. A) withB) inC) betweenD) for