已知椭圆W： $\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$ （a＞b＞0）的上下顶点分别为A，B，且点B（0，﹣1）．F₁，F₂分别为椭圆W的左、右焦点，且∠F₁BF₂=120°．

（Ⅰ）求椭圆W的标准方程；

（Ⅱ）点M是椭圆上异于A，B的任意一点，过点M作MN⊥y轴于N，E为线段MN的中点．直线AE与直线y=﹣1交于点C，G为线段BC的中点，O为坐标原点．求∠OEG的大小．

汉武帝在地方设置的监察地方官员和打击豪强的地方官是（    ）

    Mike always loves ships. When he was older, he said, “I'm going to be a soldier.” But his eyes were not very1and he did not get in.

    Then he said, “I'm going to2a small boat and I'm going around the world.” But boats were very expensive, and Mike did not have enough3

    Last summer Mike found a swimming4near his house. The lessons did not cost very5 and Mike began going to the school at every end of the week and having6. Now he is a good swimmer.

    Last week a little boy said to him, “You're a very good swimmer. How do7learn to swim so well?”

    “I'm not good at all,” Mike said and he smiled. “8 I'm in the water, I say to myself, “There are 9fishes behind me!” Then I'm very afraid, and I10quickly.”

It has a ____ ____.（大嘴）