This is a story about a famous American woman. Her name is Helen Keller. When she was only nineteen months old, she got an illness. It made her blind(瞎的) and deaf (聋的). She couldn't see or hear anything, so she couldn't learn to speak. When she was six, a young teacher came and taught her to read and write. Her name was Ann Sullivan.

    Later, when she was ten, Miss Sullivan took her to another teacher, Sarah Fuller. Sarah Fuller taught her to speak. Helen put her fingers on Miss Fuller's face and into her mouth. In this way, she learned to speak. She went to school and became famous because she was one of the first blind and deaf persons to learn to speak. She began to write books and to help the blind in many parts of the world. Her hard work and her courage(勇气) made people in all countries love her.

根据短文内容回答问题。

阅读理解

    Gabby Douglas stood beneath the Rio Olympic Arena, still in her Team USA leotard, trying hard to understand how she had become the most unpatriotic athlete in Rio. Tears filled in her eyes. She tried hard to talk but no words came out. Her pauses were long and uncomfortable.

    “I've been trying to stay off the Internet because there's so much negativity,” she said. The attacks against her have been everywhere these last few days. The bullies blamed her for not putting her hand over her heart while the US national song played. Besides, some other people attacked her for not jumping up and cheering hard enough for team-mates at the all-around final. All of this prompted her mother, Natalie Hawkins, to tell Reuters this weekend, that Douglas is “heartbroken”.

    It showed on Sunday, in Douglas's final performance of this Olympics and maybe in the Games ever. Douglas finished sixth in the uneven bars, far from the medal stand she owned four years ago in London, and shook her head, confused. What had she done wrong? Nothing made sense.

    “I mean, you do Olympics for your country, and you do it for yourself, how have I offended them? What have I done? I was standing in respect for USA. I'm coming out there representing them to the best of my abilities, so how would I be in disrespect?

【实验目的】证实灰白色粉末中含有CaCO₃和Fe．

【查阅资料】①氢气具有还原性，能夺取某些金属氧化物中的氧，使金属还原，②白色的无水硫酸铜遇水变成蓝色．

实验设计装置如图所示：

【实验预测与分析】

材料一：改革开放之前，农民老王家人多地少，日子过得很紧巴。改革开放以后，头脑灵活、不怕吃苦的老王一家发展起林蛙养殖，凭着自己的辛勤劳动成了远近闻名的富裕户。
材料二：富起来的老王不忘帮助其他农户，经他培训的十几家农户都发展起了自己的林蛙养殖，日子一天比一天好。