阅读理解:阅读下列短文，然后从每题所给的四个选项(A、B、 C、和D)中，选出最佳选项。

    Mr. and Mrs. Green were going on their vacation with their children, and they had to arrive at the airport before 11:40 the next morning. “It takes us thirty minutes to get there in a car,”Mr. Green said, “so we must get ready before eleven o'clock. Don't be late.”

At ten fifty, all of them were busy doing something, but Mrs. Green wasn't. She sat quietly in a chair in the garden and enjoyed the good weather.

Mr. Green and the children were surprised, but Mrs. Green said, “Don't worry! Before I went to bed last night. I made all our clocks and watches twenty minutes ahead(提前). Now we can get to the airport early.”

（Ⅰ）先完成关于商品和服务评价的2×2列联表，再判断能否在犯错误的概率不超过0.001的前提下，认为商品好评与服务好评有关？

（Ⅱ）若将频率视为概率，某人在该购物平台上进行的3次购物中，设对商品和服务全好评的次数为随机变量X：

①求对商品和服务全好评的次数X的分布列；

②求X的数学期望和方差．

附临界值表：

K²的观测值：k= $\frac{n{(ad-bc)}^2}{\left(a+b\right)\left(c+d\right)\left(a+c\right)\left(b+d\right)}$ （其中n=a+b+c+d）

关于商品和服务评价的2×2列联表：

表示4个氢原子的符号是  （  ）

用两个全等的直角三角形拼下列图形：①矩形；②菱形；③正方形；④平行四边形；⑤等腰三角形；⑥等腰梯形．其中一定能拼成的图形是（    ）．

如图所示为我国局部地区。读图，完成下题。