根据短文内容，完成表格中所缺的信息(每空词数不限)。

D

    Mike's eleventh birthday is next Saturday. He wants to have a dinner party at his house. He asks some good friends to his party. David and Sally are two of them. Now they are discussing (讨论)what they will buy for Mike.

    David: Hey, Mike's birthday dinner is next Saturday. Let's thin k about the food.

    Sally: Sure, does he like birthday cake?

    David: No, he doesn't. He is tired of(对……厌烦)butter(奶油)a lot.

    Sally: Well, what does he like?

    David: He likes burgers and fried chicken．

    Sally: That's great. I like them too. What about vegetable salad?

    David: No, he doesn't like. But he likes fruits.

    Sally: What fruits?

    David: I think his favorite fruits are apples and bananas.

    Sally: OK. Oh, don't forget ice-cream. He likes it too.

    Sally: All right. Let's take all.

随着时代的发展，汉字形体也在不断变化着，汉字字形演变的总趋势是____。主要有

①____(时代)____         ②____(时代)____

③____(时代)____          ④____(时代)____

⑤____(时代)____等五种。

一机器可以按各种不同速度运转，其生产物件有一些会有缺陷，每小时生产有缺陷物件的多少随机器运转速度而变化，用x表示转速（单位：转/秒），用y表示每小时生产的有缺陷物件个数，现观测得到（x，y）的4组观测值为（8，5），（12，8），（14，9），（16，11）．

（Ⅰ）假定y与x之间有线性相关关系，求y与x之间的回归直线方程；

（Ⅱ）若实际生产中所容许的每小时最大有缺陷物件数为10，则机器的速度不得超过多少转/秒？（精确到1）