不等式2x－6＞0的解集为（      ）

表达·交流：
      阅读下面的材料，你如何看待沙鸥的做法？写一段话阐述自己的看法（100字以上）。
                                                     沙鸥学飞
        一群年幼的沙鸥，无忧无虑地嬉戏在绿色的湖水中。
        一只勇敢的小沙鸥尝试着，挣扎着，试图展开翅膀，飞向蓝天。
        它一次次不停地扑摔着，挣扎着，失败着，期于的沙鸥只是看着。突然间，那只沙鸥成功了，自由翱翔于天际。
        在那只会飞的沙鸥引领下，第二只，第三只沙鸥开始了同样的尝试……
        过了几天，所有的沙鸥都学会了飞翔。

    One day, Pierre, ____ worked in a government office, received an ____ (invite) to a palace ball. His wife, Mathilde, had no money ____ (buy) jewellery, so she borrowed a ____ (beauty) necklace(项链) from ____ (she) friend, Jeanne. She looked very beautiful. And they had ____ wonderful time that evening.

    But after the ball, she ____ (find) the necklace missing. They had to borrow a lot of money to buy a new one for Jeanne. In order to pay back the money, they worked day and night ____ 10 years. Mathilde became very old, so Jeanne didn't recognize her when they met in a park 10 years ____ (late). From this story, we know a person shouldn't be affected by vanity(虚荣心), ____ it will cost him a lot.

下列关于月相的叙述,其中正确的是(   )

①月相的变化就是月球形状的变化  ②月亮圆缺变化的各种形状叫做月相  ③月相的变化是没有规律的  ④月相变化是太阳、地球、月球相对位置不断变化的结果  ⑤月相变化具有周期性特点