出生前的我们舒适地生活在妈妈的（　　）里．

家里来客人了，你热情地为客人烧水沏茶．其中洗水壶要用1分钟，烧开水要用10分钟，洗茶杯要用1分钟，拿茶叶要用半分钟，用开水泡茶要用1分钟．为了让客人尽快喝到茶，请你进行合理安排，设计一个方案．把你的方案用图表表示出来．

已知函数f(x)是定义在R上的奇函数,且它的图像关于直线x=1对称,若函数$f\left(x\right)=\sqrt{x}(0<x\le 1)$,则$f(-5.5)$ (   )

    Helen Keller lived in the USA. When she was a baby, she got very sick. After she was better, she couldn't and hear well. A few years later, things got worse. There was no way for Helen to speak to other people. She heard nothing. She saw nothing. She didn't understand anything.

    One day a teacher came to live with Helen and her family. The teacher helped Helen learn about words. Helen was such a bright girl that she could spell her first word soon. When she was older, she went to college.

    Helen became very famous later. She traveled around the world and helped many blind and deaf people. The world remembers her today as a brave and wonderful person. She was blind and deaf, but she found a way to see and hear.