阅读理解
    Hi. I am Maya. I am 13 years old. I am from Africa. My father is a teacher and my mother works in a hospital. Now they are working in Beijing. They both like their work and work very hard. My father's favorite animal is the panda, but I like dolphins best.
    I am studying in a middle school. And I like music and drawing best. I want to be a designer. I like to design my room. I like the color pink, so there are a lot of pink things in my room.
    I have three friends in my room. They are Mike, Dora and Peter. They are my toys. I love them. Every night, they sleep with me.

20年来，孙水林都会在春节前给与自己一起做工的农民工结清工钱。2010年2月10日，他在给农民工送工钱的途中遭遇车祸遇难。弟弟孙东林为了完成哥哥的遗愿，在春节前，将哥哥遗留的钱、自己的积蓄加上母亲的养老费共336000元送到了60多位农民工手中。 2011 年2月14日，他俩获得“感动中国2010年度人物”称号。这对“信义兄弟”的事迹告诉我们（    ）

关于关于x的一元二次方程x²+x-2=0的根的情况是（   ）

下图示意我国西北地区简图，读图回答问题。

在给定条件下，下列划横线的物质在对应的化学反应中能完全耗尽的是