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.

听小对话，回答问题  

小强用实验探究液体内部的压强与深度的关系及与液体密度的关系．他分别在玻璃杯中装入适量的水和适量的浓盐水．当把压强计探头放入液体中时，压强计的两液面高度差为h₁，如图甲所示；当把压强计的探头放入液体中时，压强计的液面高度差为h₂，如图乙所示．已知：h₁=h₂，则____ 为盐水（选填：“甲”或“乙”）．

向含 CuCl₂ 和 HCl 的 100g 混合溶液中，逐滴加入溶质质量分数为 10%NaOH 溶液，参加反应的NaOH 溶液质量与生成沉淀质量关系如图，据图回答：

若 $x_1,x_2,\cdots ,x_2{}_{018}$ 的平均数为3，标准差为4，且 $y_i=-3\left(x_i-2\right)$ ， $i=x_1,x_2,\cdots ,x_2{}_{018}$ ，则新数据 $y_1,y_2,\cdots ,y_{2018}$ 的平均数和标准差分别为（   ）