在下面一段文字的横线处补写出恰当的语句，使整段文字语意完整连贯，内容贴近，逻辑严密。每处不超过15个字。

    随着人类科技的飞速发展，西方一些学者开始对科技进行批判反思，强调科技的负面性。他们认为，____，人类自己创造的科学技术有可能把自己毁灭掉。人类的智慧真的无法驾驭科技吗？西方学术界给人一种错觉，好像人类的科学技术发展有多快似的。实际上，同大自然的力量相比，____，人类连太阳系都走不出去，医学甚至连人的寿命都无法有效延长。因此，____。

已知椭圆C：$\frac{x^2}{a^2}$+$\frac{y^2}{b^2}$=1（a＞b＞0）的离心率为$\frac{\sqrt{6}}{3}$，焦距为2$\sqrt{2}$，过点D（1，0）且不过点E（2，1）的直线l与椭圆C交于A，B两点，直线AE与直线x=3交于点M．

（1）求椭圆C的标准方程；

（2）若AB垂直于x轴，求直线MB的斜率。

阅读理解

Happy Family Salad

Ingredients :

Two adults ( married, responsible and loving parents)

One child (or more)

Two large bowls of tolerance (宽容)

A cup of understanding

Four leaves of fun and games

Two tablespoons of salad cream of kindness

A whole heap of sharing and caring

A bag of happy thoughts

A bag of smiles

Method :

1). Put all the ingredients except the leaves of fun and games, cream of kindness, happy,thoughts and smiles, in a mixing bowl.

2). Pour in the cream of kindness and mix well.

3). Arrange the leaves of fun and games in a salad bowl.

4). Sprinkle (撒) the happy thoughts and smiles on top and serve.

Serving suggestion :

Do not refrigerate. Always serve salad fresh and eat immediately, and together as a family.

Stale salad should be discarded before it breeds unhappiness.The Happy Family Salad can be

eaten at a as art of breakfast, lunch or dinner.

根据材料内容选择最佳答案，并将其标号填涂在答题卡相应位置。