It is Saturday morning. My father is ____  the car.  I am ____  him. My mother is ____  ____   in the kitchen.  Helen is ____ the living room. She is ____  the floor. Where is Tim? What is he doing now? Tim is in his ____ .He is ____. Ben's dog is sleeping too.

25%x=10

x=____

如图所示，皮带运输机将物体匀速地送往高处，下列结论正确的是（   ）

以下物态变化的事例中，属于液化的是（　　）

一位母亲生了一儿一女双胞胎，这两个小孩最有可能来自于（　　）