单项选择题

For thousands of years, man has enjoyed the taste of apples. Apples, which are about 85 percent of water, grow almost everywhere in the world but the hottest and coldest areas. Among the leading countries in apple production are China, France and the United States.
There’re various kinds of apples, but a very few make up the majority of those grown for sale. The three most common kinds grown in the United States are Delicious, Golden Delicious, and McIntosh.
Apples are different in color, size, and taste. The color of the skin maybe red, green, or yellow. They have various sizes, with Delicious apples being among the largest. The taste may be sweet or tart (酸). Generally, sweet apples are eaten fresh while tart apples are used to make applesauce (苹果酱).
Apple trees may grow as tall as twelve metres. They do best in areas that have very cold winters. Although no fruit is yielded during the winter, the cold period is good for the tree.

The word" yielded" in the last sentence means"() ".

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