2013年6月，******访问了美国，两国元首共同规划了中美关系发展的新蓝图。1972年，美国总统尼克松访问了中国，开启了中美关系的新篇章，其意义在于(     )

    Hi, I am Susan. I am from the U. K. But now I'm studying(学习) in China. I'm going to do many things in the winter holiday. First, I'm going to finish my homework. Then I'm going to take a trip. I'm going to Beijing. It's snowy in Beijing. There is white snow everywhere. So I'm going to make a snowman. I can ski. My parents will come to China with me. We are going to fly there. We are going to have a nice trip.

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下列二次函数中，图象以直线x = 2为对称轴，且经过点(0，1)的是(     )