设不等式组$\left\{\begin{array}{c}x\ge 0\\ y\ge 0\\ x+y\le 2\end{array}\right.$表示平面区域为D，在区域D内随机取一个点，则此点到坐标原点的距离大于$\sqrt{2}$的概率是（  ）

    Hello! Nice to meet you. Now let me introduce myself (自我介绍) to you. My name is Mary. I'm 12 years old. I'm from Canada and I speak English. I'm a tall girl. I have long brown hair and big blue eyes. I like music a lot. I often sing songs with my friends in my free time. I have a happy family. There are four people in my family. They are my mom, my dad, my sister and me. I like China very much and I want to visit Beijing, but I can't speak Chinese at all.

    I hope (希望) to be your friend, then we can help each other with English and Chinese.

根据材料内容，选择最佳答案。

俗话说：“当局者迷，旁观者清。”这告诉我们需要（  ）