下图漫画告诉我们要善于发现自己的长处，因为发现自己的长处是（ ）
根据文章内容，选择正确的答案。 New York，London，Paris and other big cities are exciting places to live in. There are many interesting things to see and to go to. You can go to different kinds of museums，plays and films. You can also buy things from all over the world. But there are some problems in big cities too. It is expensive to live there and there are too many people in some places of big cities. Every year many people move to the cities to find jobs，to study at good schools. But sometimes these people can't find work or a good place to live in. Also it is hard to keep the cities safe(安全的）and clean. Some people enjoy living in big cities，others do not. Before moving to a big city，they should think about the problem of living there.
材料:2016年是西藏和平解放65周年。65年来，国家把方针政策同西藏实际紧密结合，走有中国特色、西藏特点的发展道路，切实保障和改善民生，加强民族工作和宗教工作，全力维护西藏社会和谐稳定。
请运用民族、宗教相关知识，谈谈国家应如何维护西藏的和谐稳定。
锂常被人们誉为“金属味精”．已知锂的核电荷数为3，锂比铝活泼．下列说法错误的是（ ）
