根据短文内容判断下列句子正误。
    My name is Amy. Tomorrow is Saturday. My parents aren't going to work, but we are going to be very busy tomorrow. My mother is going to buy something. I'm going to the bookstore in the morning. Then I'm going to buy a dictionary.
    Tomorrow evening we are going to visit my grandparents and have a big dinner. After that we are going to the cinema. I think we are going to have a nice weekend.

已知函数f（x）= $\frac{a{x}^2}{e^x}$ ，直线y= $\frac{1}{e}$ x为曲线y=f（x）的切线（e为自然对数的底数）．

robots/ like/ you/ Do (?) (连词成句)

凡—华盛顿体系形成后，法国元帅福煦曾预言：“这不是和平，这是20年的休战。”这主要是因为

椭圆$\frac{x^2}{16}+\frac{y^2}{9}=1$的焦点坐标为（　　）