请阅读下面短文，掌握其意思，然后从方框中所给方的词中选出最恰当的10个，用适当形式填空。（每小题1分，共10分）

In America, science is a very important class. In middle school we were ____  how to solve problems by thinking like a ____ . We had to think of a question, guess an answer, and ____  a way to test our guess. There were lots of experiments and other activities. I remember studying how science can explain things like light and electricity.
Our English class is very different from ____  in China, more like Chinese class I think! We read lots of books and talked about them, ____  we could understand what we read better. We learned how to know what information is important when we read and what ____  so important. In my class we all gave six ____  to the class during the year. We had to talk in front of the class for six ____ ten minutes!
We also have health classes. In this class, we learned about our bodies and how to take care of ____  by doing things like eating healthy foods, and not doing ____  things like smoking or drugs (毒品). We cooked a little bit, but I was not very good at it!

表1

表2

已知表1数据的中位数估计值为26，回答以下问题．

（Ⅰ）求a，b的值，并估计驾驶员无酒状态下停车距离的平均数；

（Ⅱ）根据最小二乘法，由表2的数据计算y关于x的回归方程 $\hat{y}=\hat{b}x+\hat{a}$ ；

（Ⅲ）该测试团队认为：驾驶员酒后驾车的平均“停车距离”y大于（Ⅰ）中无酒状态下的停车距离平均数的3倍，则认定驾驶员是“醉驾”．请根据（Ⅱ）中的回归方程，预测当每毫升血液酒精含量大于多少毫克时为“醉驾”？

（附：对于一组数据（x₁，y₁），（x₂，y₂），…，（x_n，y_n），其回归直线 $\hat{y}=\hat{b}x+\hat{a}$ 的斜率和截距的最小二乘估计分别为 $\hat{b}=\frac{{{\displaystyle \sum }}_{i=1}^n{x}_i{y}_i-n\overline{x}\overline{y}}{{{\displaystyle \sum }}_{i=1}^n{x}_i^2-n{\overline{x}}^2}$ ， $\hat{a}=\overline{y}-\hat{b}\overline{x}$ ．）