A common design is a tall box with food placed on several shelves inside. The shelves are pieces of metal with many small holes through them. The sides of the box are
(49) with pieces of thick cloth. Containers of
50) axe placed at the top and bottom of the cooler. The ends of each piece of cloth lie in the water so the cloth stays wet.
Put the cooler in the open air but not in the sun.
(51) will pass through the wet cloth. The inside of the box will
(52) several degrees cooler than the outside air temperature. And this may be
(53) enough to keep foods fresh at least for a short time.
Cold
(54) in a freezer, however, can keep foods in good condition fox months after the
(55) season. Yet foods can be damaged if they are kept too cold The British development group Practical Action says the best way to prepare foods for storage is at
(56) time while still in the field. Use a sharp knife to avoid damage.
- A) stayI) covered
- B) storageJ) under
- C) harvest
K) water - D) other
L) cold - E) growing
M) air - F) another
N) preparation - G) ice
O) take - H) cool