如图是函数y=f（x）的图象，f（f（2））的值为（　　）

—Lucy, I think.

材料一：注重实际的列宁认识到让步是不可避免的，因而（于1921年）……允许局部地恢复资本主义。……对列宁来说，这种新的政策并不意味着社会主义在俄国的结束，而是暂时的退却，“后退一步为的是前进两步

——（美）斯塔夫里阿诺斯《全球通史》

材料二：1929年到1933年这次全球经济危机……震撼了整个资本主义世界，也充分暴露了自由市场经济的弊端。而苏联却在第一个五年建设计划（1928-1932年）的指导下，获得突飞猛进的发展。20世纪30年代，西方人士纷纷前往苏联取经。美国的一名记者从苏联回国后告诉国人：“我看到了未来，它行得通”。一时之间，“计划”成了最时髦的名词

——《大国崛起》

材料三：

——摘编自汪华生《你知道或不知道的美国史》

材料四：美国国会通过了法案，要求企业按部门就产品的产量、价格等制定公平竞争法规，以防止盲目竞争引起生产过剩。法案还规定了最低工资和最高工时的标准。

——摘自《历史——经济成长历程》（岳麓书社）

根据短文内容，选择最佳答案。

A

    Do you like blueberries? But maybe you don't know blueberries well.

    Farmers often grow them on bushes(灌木丛) in the field. A blueberry is small and round. Many blueberries can grow on one bush. At first, the blueberries are green. You can't eat the green berries. A lot of sun and rain help them become sweet. When the berries become blue and big, they are ripe and sweet.

    After the blueberries are ripe, people put them into boxes and bring them to stores and supermarkets. People buy the blueberries and take them home to eat. After they wash the berries, they eat them one by one. Some people like to cook with blueberries. They make blueberry muffins(松饼) and pancakes. They like to make blueberry juice. Others like to make blueberry ice cream. It is very cool!