Some foods can make you sick if they are stored in conditions that are not cold enough to prevent the growth of harmful organisms. Freezing can keep some foods in good condition for months after the growing season. Yet foods can be damaged if they are kept too cold.

The British Development Group says the best time to prepare foods for storage is at harvest time while foods are still in the field.

Use a sharp knife and place the harvested items on a clean surface or directly into storage containers. Do not put them on the ground.

Use clean water to remove dirt, and keep the water clean. Usually it is better not to remove outer leaves from fruits and vegetables before storage. Without leaves, foods can become dry quickly.

Fruits and vegetables must cool from field heat before they are put into storage containers. Cooling them in water can spread funguses (霉菌) throughout the food. A better idea is to harvest foods either early or late in the day, and then leave them to cool naturally.

Some fruits and vegetables must be stored at zero to four degrees Celsius. Some foods need to be stored at four to eight degrees Celsius, and some need to be stored above eight degrees Celsius for best results.

Wet fruits and vegetables so they do not become too dry. The best time to do this is before storage. Cover the items in plastic once they reach the right temperature for storage. Most fruits and vegetables need the relative humidity (湿度). Finally, leave spaces between the food containers and the walls of the cold storage area so air can flow. Keep the spaces clean. And try not to open the doors too often.

64. The text is mainly about                 .

     A. the benefits of storing foods in cold conditions

     B. some tips for the storage of foods

     C. the research on some fruits and vegetables

     D. the process of keeping foods in good condition

65. What is the function of the leaves of fruits and vegetables?

     A. Keeping them from harmful organisms.               B. Helping keep them clean.

     C. Helping keep them fresh.                            D. Making them look more attractive.

66. Why is it better to harvest foods either early or late in the day?

     A. Because foods have no field heat then.

     B. Because it is easy to make them become cool from field heat naturally.

     C. Because foods then are wet enough to be stored.

     D. Because foods are cleaner then.

This room is used ________ food.

[　　]

Sometimes his room ________ corn at harvest time.

1. A.
   is used for
2. B.
   is used as
3. C.
   is used to store
4. D.
   is used to storing

Charles R. Drew was a medical student at Columbia University in New York. Before he graduated, he wrote an article __41___ blood bank, that is, the storing of blood. Up till then, a lot of people had died from loss of blood __42___ there was no blood bank.
When the United States entered the Second World War, it became __43___ to set up blood banks. Dr Drew became __44___ of the Red Cross’s first blood bank. When the Red Cross __45___ blood banks to collect and store blood for men __46__ in battle, black American gave blood along with the whites. At ___47__ their blood was not accepted. Later blood from the blacks was ___48___ but was stored in a __49___ place from “white” blood. Although the best doctors __50___ that there was __51___ difference at all between the blood of blacks and whites, the Red Cross, with the support of the government, __52___ to separate black blood from white blood.
After the war, Dr Drew was ___53__ from Washington with three other doctors to attend a medical meeting in a southern state. In northern Carolina their car went __54___ a ditch（深沟）and Dr Drew was __55___ hurt. He had lost __56__ blood by the time a passing car took him to the __57___ hospital. But they were stopped at the gate of the hospital. “__58__him to the hospital for blacks.” No matter __59___ they said, they could not get into the hospital. They had to take him to the __60___ hospital, but on the way Dr Drew died because he had lost too much blood.

Charles R. Drew was a medical student at Columbia University in New York. Before he graduated, he wrote an article __36___ blood bank, that is, the storing of blood. Up till then, a lot of people had died from loss of blood __37___ there was no blood bank.
When the United States entered the Second World War, it became __38___ to set up blood banks. Dr Drew became _39___ of the Red Cross’s first blood bank. When the Red Cross __40___ blood banks to collect and store blood for men __41__ in battle, black American gave blood along with the whites. At ___42__ their blood was not accepted. Later blood from the blacks was ___43___ but was stored in a __44___ place from “white” blood. Although the best doctors __45___ that there was _46___ difference at all between the blood of blacks and whites, the Red Cross, with the support of the government, __47___ to separate black blood from white blood.
After the war, Dr Drew was ___48__ from Washington with three other doctors to attend a medical meeting in a southern state. In northern Carolina their car went __49___ a ditch（深沟）and Dr Drew was _50___ hurt. He had lost __51__ blood by the time a passing car took him to the __52___ hospital. But they were stopped at the gate of the hospital. “__53__him to the hospital for blacks.” No matter __54___ they said, they could not get into the hospital. They had to take him to the __55___ hospital, but on the way Dr Drew died because he had lost too much blood.