资料题：The main idea of the passage is that（　）。

The United States is one of the great fruit-growing countries in the world.Fine red apples come from orchards in Washington and New York.Golden oranges come from Southern California and Florida.Fruit grows in all parts of America.The kind of fruit that is grown depends on the weather in each place.Orange trees cannot be grown where temperatures drop below freezing.Southern California and Florida are far apart, but their weather is much the same.They do not often have freezing temperatures.In Washington, apple trees were planted near the Pacific Ocean.In New York, they grow near the Great Lakes.Apple trees are often planted near water.Water temperature changes moreslowly than land temperature.Near water, the temperature does not drop so fast.There is less chance of frost in late spring or early fall.Frost can kill apples.Our country has many kinds of weather.It has many kinds of soil.Because of this, we raise and eat more fruit than any other county in the world.