在棱长为1的正方体$ABCD-A_1{B}_1{C}_1{D}_1$中，则平面$A{B}_{1}C$与平面$A_1{C}_{1}D$间的距离（   ）

下图为某地区的地质剖面图和水循环示意图。读图，完成下列问题。

阅读下列短文，根据短文内容填写表格。(每空限填一词)     

    Hi! Do you know the three children? They are in a happy family. Xiao Xue is a helpful girl. She is beautiful. She likes studying. She studies very hard. She gets up early and finishes her breakfast quickly .Then she rides her bike to school . Liu Xing is a little lazy. He gets up late and then washes his face, brushes his teeth in a hurry. Then he goes to the bus stop without breakfast. He usually plays basketball after school. In the evening, he seldom (很少)does homework. He goes to bed late. Xiao Yu is a lovely boy. He gets up very slowly and then he usually takes a shower(淋浴)at home before breakfast. After that, he goes to school in his father’s car. He likes watching TV in the evening.

结合语境选词填空，恰当的一项是(    )
      朴素是一种美。因为朴素美的形式不复杂，不          ，寓美于清淡之中，所以更能衬托出人的自然美。重要的是，人们透过外袁的朴素美，能看到          的内在美，这种美          不显露于外，          它会让人的精神之美益加彰显。