从方框中选择恰当的句子补全对话。

A:Where did you go last summer holiday?

B:____ 

A:Did you go there by train?

B:No. My father bought a new car. ____ 

A:Wow! That's cool. ____ 

B:We climbed the Great Wall. And we took many pictures.

A:What else did you do?

B:____ And we bought many nice presents for our friends.

A:____ 

B:On July 25th.

我国北方农村里常将马铃薯贮藏在地窖里，进入地窖取物之前，农民往往把一盏油灯吊入地窖内，这一做法的目的是（　　）

如图，平行四边形ABCD中，D点在抛物线y= $\frac{1}{8}$ x²+bx+c上，且OB=OC，AB=5，tan∠ACB= $\frac{3}{4}$ ，M是抛物线与y轴的交点．

①请直接写出A₁的坐标，并画出△A₁B₁C₁

②P（a，b）是△ABC的AC边上一点，将△ABC平移后点P的对称点P'（a+2，b﹣6），请画出平移后的△A₂B₂C₂．

③若△A₁B₁C₁和△A₂B₂C₂关于某一点成中心对称，求对称中心的坐标

依据图分析解答：