题目

阅读理解 Ever wondered whether punishment actually makes people cooperate (合作)? A team of scientists created an experiment to figure it out and the results were pretty unexpected. To understand what they found, you have to know why these scientists were studying punishment. They were trying to figure out why people cooperate when it's often so easy to profit at others expense. Why don't friends steal from each other? Why do parents bother to feed their children? If the answer to these questions is obvious to you, congratulations, you are ahead of scientists. They're still trying to fig（2008•深圳）将二次函数y=x2的图象向右平移1个单位，再向上平移2个单位后，所得图象的函数表达式是（ ）A．y=（x-1）2+2B．y=（x+1）2+2C．y=（x-1）2-2D．y=（x+1）2-2