题目内容：

( A )根据各语段的文意，从A到F的选项中选择最佳标题填入对应的横线上内。

A. That’s the very voice      B. Used to protect themselves.

C. Used in the past.       D. True love in the world.

E. More than taste better   F. Worried mother.

1._______Why do you think people who live in some hot countries eat very spicy food? Is it because the spices make the food taste better, or is there some connection between spices and healthy food? Researchers from Cornell University think that it is because spices plants have some important chemicals. These chemicals can kill bacteria which spoil food.

2._______ If you like spicy food, it is possible that hundreds of years ago, when there were no fridges, people in your country started using spices to keep the food from spoiling.

3.Some birds like eating locust, but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of crops. When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown color as crops have.

4._______In 1993 an unknown American called Clarence Nash went to see the filmmaker Walt Disney. He had an unusual voice and he wanted to work in Disney’s cartoon film for children. When Walt Disney heard Nash’s voice, he said, “Stop! That’s our duck!”

5._______When you are a baby, mother takes good care of you as much as possible. In your waking hours she always holds you in her arms. When you are ill, she stops her work right now to look after you day and night and forgets about herself.