We high school students do have some growing pains,____ we can get rid of them correctly and wisely. First, some of us are upset ____ their body styles and looks. It's unnecessary and it's not important at all. We needn't care about it. It is one's inner beauty____ matters. Second, we sometimes seem to be misunderstood by our teachers, parents and classmates.____ (face) with this, we can find ____ proper time to have a heart-to-heart talk with them, trying to remove the____(understand). Some of us have fewer in ends. I think being open-minded and friendly____ (do) you good. Third, we may fall behind others,____ makes us stressed. Actually we can encourage ____ to work efficiently, full of determination. Lastly, some of us don't have much pocket money, so they feel unhappy. Isn't it strange? So long as we have some, that's enough. And we can learn ____to spend money.

已知正三棱台的上下底面边长分别为1和4，侧棱长为2，则此棱台的高为（　　）

下列四个盆地中，位于湿润地区的是（   ）

乌尤尼益沼（含有大童盐分的沼泽地带，下图)，平均海拔3656米，是世界最大的盐沼当地降水稀少，仅在雨季（12月至次年1月）积水，湖面像镜子一样倒映着天空景色，湖天一色，水天相接，因此被称为“天空之镜”。这里除了拥有美到极致的自然风光，还有粉色火烈鸟、千年仙人掌、蜂鸟等珍稀动植物，以及完全由盐砖建造的宾馆。