①Are they under the table?
②My mother is in the kitchen.
③Is she in the living room?
④Where are my glasses?
⑤No, they aren't.They are in the door.
⑥My sister is in her bedroom.
由于光的折射,盛满水的金鱼缸看上去比实际的要 ____(填“深”或“浅”);从侧面看圆形金鱼缸里的鱼比真实的 ____(填“大”或“小”),原因是鱼缸相当于一个 ____透镜.
由三条曲线y= x ,x轴及直线y=x﹣2所围成的图形的面积是____.